Angular google maps + fetching the data in json format

Question

I am new to Stackoverflow and angular 8. I have a question regarding fetching the data we get from google places api. My requirement is, I should be able to search a place in the search bar and then in result, I will see the markers on the map with available stores in the area ie store locator. My question is how do I query the api so it will give me the available stores data in that location in json format?

My api URL is like this: https://maps.googleapis.com/maps/api/js?key=API_KEY&libraries=places .

Here if I change the js to json, it gives me the error you are using the api without key . Even if I generate other developer api key it gives me the same issue.

I have been looking for a solution for the last 2 days. I don't understand how do I get the available stores information in json so that I can fetch the details and show the markers on the map. Could someone please help? Your help will be really appreciated. Thanks