Retrieve data from pivot and their related tables laravel in single query

I have two tables with many to many relationship as follows

Buyer
  - id
  - Name
Book
 - id
 - BookName
Book_Buyer
  - id
  - book_id
  - buyer_id
  - Quantity
  - Price

I need to retrieve Name, BookName, Quantity and Price from this relation through a single query. I need to format the response into JSON where I can show them to yajra datatable

How can I do it? I tried using an array where I pushed them through a single array but I didn't get the result in to the datatable.

$get = Buyer::all()->each(function ($buyer) {
  $buyer->books->map(function ($books) {
    return  $books->pivot;
  });
});

I tried the above solution but it gives me the whole values from database as in relation with pivot. Can anyone suggest the way to do it



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