Cannot retrieve last inserted id EF core 2.2

Question

While I understand there are many articles online about this I cannot seem to find solution to my problem. One reason is all articles I found aren't using async function. Here is my problem:

I have entity:

[Key]
public int Id { get; set; }
[Required]
public string Name { get; set; }
[Url]
public string LogoUrl { get; set; }
[Required]
public string AdministratorIdentityId { get; set; }
public string Verified { get; set; }
public int AddressId { get; set; }

I have following in my db context:

protected override void OnModelCreating(ModelBuilder model)
{
        model.Entity<RestaurantEntity>()
            .Property(p => p.Id)
            .ValueGeneratedNever();

        base.OnModelCreating(model);
}

And my code to save information to database is this:

try
{
    RestaurantEntity dbrestaurant = new RestaurantEntity();
    dbrestaurant.Name = restaurantName;
    dbrestaurant.AdministratorIdentityId = restaurantAdministrator;
    dbrestaurant.Verified = GenerateVerifiedCode();

    await _appDbContext.Restaurants.AddAsync(dbrestaurant);
    await _appDbContext.SaveChangesAsync();

    int newpk = dbrestaurant.Id;

    return newpk;
}

My problem is that newpk is ALWAYS 0, while in DB generates proper value. For some reason EF core is not retrieving inserted value.

This is code retrieving info:

This is DB value:

Answer 1

Change,

[Key]
public int Id { get; set; }

to

[Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id {get;set;}