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Angular 13 Bootstrap5 Navbar not functioning

I am using Angular 13 and added Bootstrap5 using the following command:

ng add @ng-bootstrap/ng-bootstrap

The index.js file is:

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <base href="/">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.3.1/dist/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

    <title>Hello, world!</title>
  </head>
  <body>
    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.14.7/dist/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.3.1/dist/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
    <app-root></app-root>
  </body>
</html>

and app.component.html is:

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <div class="container-fluid">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          Dropdown
        </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
  </div>
</nav> 

my package.json is:

{
  "name": "lshop",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "watch": "ng build --watch --configuration development",
    "test": "ng test"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~13.3.0",
    "@angular/common": "~13.3.0",
    "@angular/compiler": "~13.3.0",
    "@angular/core": "~13.3.0",
    "@angular/forms": "~13.3.0",
    "@angular/localize": "~13.3.0",
    "@angular/platform-browser": "~13.3.0",
    "@angular/platform-browser-dynamic": "~13.3.0",
    "@angular/router": "~13.3.0",
    "@ng-bootstrap/ng-bootstrap": "^12.1.2",
    "@popperjs/core": "^2.10.2",
    "bootstrap": "^5.1.3",
    "rxjs": "~7.5.0",
    "tslib": "^2.3.0",
    "zone.js": "~0.11.4"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~13.3.7",
    "@angular/cli": "~13.3.7",
    "@angular/compiler-cli": "~13.3.0",
    "@types/jasmine": "~3.10.0",
    "@types/node": "^12.11.1",
    "jasmine-core": "~4.0.0",
    "karma": "~6.3.0",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage": "~2.1.0",
    "karma-jasmine": "~4.0.0",
    "karma-jasmine-html-reporter": "~1.7.0",
    "typescript": "~4.6.2"
  }
}

When I run the application, the navbar does show up, but the dropdown component in the navbar does not work - the drop down does not show when clicked. Also, the collapse functionality of the navbar is not working. When I click on the collapse button nothing happens. What am I doing wrong? Can I really use Bootstrap Navbars in Angular 13? Any help will be appreciated. Thanks

See the snippet here .

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './app.component';
import { HelloComponent } from './hello.component';

import { NgbModule } from '@ng-bootstrap/ng-bootstrap';

@NgModule({
  imports: [BrowserModule, FormsModule, NgbModule ],
  declarations: [AppComponent, HelloComponent],
  bootstrap: [AppComponent],
})
export class AppModule {}

app.component.ts

import { Component, VERSION } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css'],
})
export class AppComponent {
  name = 'Angular ' + VERSION.major;
  navbarCollapsed = true;

  toggleNavbarCollapsing() {
    this.navbarCollapsed = !this.navbarCollapsed;
  }
}

app.component.html

<link
  href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.1/dist/css/bootstrap.min.css"
  rel="stylesheet"
  integrity="sha384-iYQeCzEYFbKjA/T2uDLTpkwGzCiq6soy8tYaI1GyVh/UjpbCx/TYkiZhlZB6+fzT"
  crossorigin="anonymous"
/>
<script
  src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.1/dist/js/bootstrap.bundle.min.js"
  integrity="sha384-u1OknCvxWvY5kfmNBILK2hRnQC3Pr17a+RTT6rIHI7NnikvbZlHgTPOOmMi466C8"
  crossorigin="anonymous"
></script>

<nav class="navbar navbar-expand-sm navbar-light bg-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">
      <h1>Angular Bootstrap</h1>
    </a>
    <button
      (click)="toggleNavbarCollapsing()"
      class="navbar-toggler"
      type="button"
      data-bs-toggle="collapse"
      data-bs-target="#navbarSupportedContent"
      aria-controls="navbarSupportedContent"
      aria-expanded="false"
      aria-label="Toggle navigation"
    >
      <span class="navbar-toggler-icon"></span>
    </button>
    <div
      [class.collapse]="navbarCollapsed"
      class="navbar-collapse"
      id="navbarSupportedContent"
    >
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item dropdown">
          <a
            class="nav-link dropdown-toggle"
            href="#"
            id="navbarDropdown"
            role="button"
            data-bs-toggle="dropdown"
            aria-expanded="false"
          >
            Dropdown
          </a>
          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li><hr class="dropdown-divider" /></li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
          </ul>
        </li>
        <li class="nav-item">
          <a
            class="nav-link disabled"
            href="#"
            tabindex="-1"
            aria-disabled="true"
            >Disabled</a
          >
        </li>
      </ul>
      <form class="d-flex">
        <input
          class="form-control me-2"
          type="search"
          placeholder="Search"
          aria-label="Search"
        />
        <button class="btn btn-outline-success" type="submit">Search</button>
      </form>
    </div>
  </div>
</nav>

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