Relationships not working

Hello .. I have the following

My products object

class Product extends Model 
{
    public function user()
    {
        return $this->belongsTo('App\User');
    }

    public function brands()
    {
        return $this->belongsTo('App\Brand');
    }

    public function categories()
    {
        return $this->belongsTo('App\Category');
    }

    public function subcategories()
    {
        return $this->belongsTo('App\Subcategory');
    }

    protected $table = 'products';

    protected $fillable = ['id', 'title','quantity','price','brand','category','subcategory','created_by','created_at','updated_at'];

}

My Category Model

class Category extends Model 
{
    public function products()
    {
        return $this->hasMany('App\Product');
    }

    public function subcategories()
    {
        return $this->hasMany('App\Subcategory');
    }

    protected $table = 'categories';

    protected $fillable = ['id', 'title'];

    public $timestamps=false;
    public $incrementing=true;

}

My View

@if(sizeof($products)>0)
            <div class="card-content table-responsive">
                <table class="table">
                    <thead class="text-success">
                        <th>ID</th>
                        <th>TITLE</th>
                        <th>QUANTITY</th>
                        <th>PRICE</th>
                        <th>CATEGORY</th>
                        <th>SUBCATEGORY</th>
                        <th>BRAND</th>
                        <th></th>
                        <th></th>
                        <th></th>
                     
                    </thead>
                    <tbody>
                @foreach ($products as $product)
                    <tr>
                        <td>{{ $product['id'] }}</td>
                        <td>{{ $product['title'] }}</td>
                        <td>{{ $product['quantity']." Units" }}</td>
                        <td>{{ "K". $product['price'] }}</td>
                        <td>{{ $product->category }}</td> // <<<< CATEGORY
                        <td>{{ $product->subcategory }}</td>
                        <td>{{ $product->brand }}</td>
                        <td><a href="{{url('/account/stock/edit/')}}/{{ $product['id'] }}"><i class="material-icons text-gray">edit</i></a></td>
                        <td><a href="{{url('/account/stock/update/')}}/{{ $product['id'] }}"><i class="material-icons text-gray">autorenew</i></a></td>
                        <td><a href="{{url('/account/stock/delete/')}}/{{ $product['id'] }}"><i class="material-icons text-gray">delete_forever</i></a></td>
                    </tr>
                @endforeach
                 </tbody>
                </table>
            </div>  
            <div align="center"> {!! $products->render() !!} </div>
        @else
            <div class="card-content">
                <h2>No products were found in the system</h2>
            </div>
        @endif

My Controller

//DATA BEING SENT TO THE CONTROLLER

public function index()
{
    $products=Product::orderBy('title')->paginate(10);
    $products->setPath('view');
    return view('stock/view')->with('products',$products);
}
    

What am i doing wrong .. Dont get me wrong, i know about database concepts and how relationships work in general, maybe im not doing it correctly according to laravel, please help .. "Thank you's" later .. :)