Laravel subcategories - php

Question

For an app, I'm creating a scraper.
At the moment I'm at the page where a user can add items to a list with the possibility to create any subcategories where you can add append those items to a specific subcategory.
At the bottom of the page, there is a section where all the subcategories are listed and below each category should be a list where all the items are who are appended to that specific subcategory.
At the moment, I was able to show all the names of the subcategories and all products that are in my main list are stored in the subcategories that has the id. (I hope you can follow what's going on). But I don't know how I can only show the articles who was that specific subcategory in that list instead of all of the main articles..
My code:
My view:
<div class="bg-gray-100 shadow-xl w-11/12 m-auto p-4 rounded-md space-y-6 relative">
<strong>Mijn sublijsten</strong>
#foreach ($subcats as $scat)
<div class="flex lg:flex-row">
<h2>{{ $scat->name }}</h2>
#if ($wishlists->contains('subcat', $cat->id))
#foreach ($wishlists as $item)
<strong>{{$item->article->title}}</strong>
#endforeach
#endif
</div>
#endforeach
</div>
My Controller
public function dashboard($role, $id)
{
$wishlists = Wishlist::all();
$articles = Article::all();
$websites = Website::all();
$categories = Category::all();
$subcats = Subcat::all();
$subcat = Wishlist::find($id)->get();
return view('dashboard', compact('wishlists', 'articles', 'categories', 'websites', 'subcats', 'subcat'));
}
My Model
class Wishlist extends Model
{
protected $table = "wishlists";
protected $fillable = [
'user_id',
'article_id',
'confirmed',
'available',
'score',
'subcat'
];
protected $casts = [
];
public function user()
{
return $this->belongsTo(User::class);
}
public function article()
{
return $this->belongsTo(Article::class);
}
public function subcat()
{
return $this->belongsTo(Subcat::class);
}
}