how to make relationship in Eloquent with this Query Builder

product
-----------------------------------------------------

product_id | product_name | ... | category_id

1                    | product_1           | 1
2                   | product_2           | 2


category
-----------------------------------------------------
category_id | category_name 

1                       | type_1
2                      | type_2

my expect result to make category as Main Header and list lastest porduct under category name

this is my Query Builder in order to get what i want above but i wanna know how to do it in Eloquent relationship ?

@foreach($loadCategory as $cat)
  @php
    $loadProduct = $productObj::where('category_id','=', $cat->category_id)
                                 ->orderBy('product_id', 'DESC')
                                 ->paginate(1);
  @endphp

  @if(count($loadProduct) > 0)
                      
    @foreach($loadProduct as $prod)
                           
        <div class="item">                 
            <div class="home-button">
                <img src="{{ asset('assets/my_lib/images/product/' . $prod->product_image) }}" alt="">
            </div>
            <div class="home-button">
                <p class="category-list-p">{{$cat->category_name}}</p>
                <p>Latest Product</p>
                <p>{{$prod->product_name}}</p>
                <a href="{{asset('product/'. $cat->category_name) }}">See All</a>
            </div>
        </div>
                        @endforeach
                    @endif
                @endforeach