View is not returning attributes stored in database

I am attempting to return which user posted a comment, along with the time they posted the comment.

I have a model for comments

use Illuminate\Database\Eloquent\Model;

    class comments extends Model
    {
        protected $guarded = [];

        public function adjustments()
        {
            return $this->belongsToMany(User::class, 'adjustments')
            ->withTimestamps();
        }
    }

A pivot table which tracks which users posted which comments

public function up()
{
    Schema::create('adjustments', function (Blueprint $table) {
        $table->increments('id');
        $table->unsignedInteger('user_id')->index();
        $table->unsignedInteger('comments_id')->index();
        $table->timestamps();
    });
}

An empty adjustments model

use Illuminate\Database\Eloquent\Model;

class adjustment extends Model
{
    //
}

In php artisan tinker when $comment = App\comment::first(); and $user = App\user::first(); I'm able to successfully attach a user_id to a comment_id using $comment->adjustments()->attach($user->id) and calling App\adjustments::all(); will correctly return

=> Illuminate\Database\Eloquent\Collection {#2935
     all: [
       App\adjustment {#2941
         id: 1,
         user_id: 1,
         comments_id: 1,
         created_at: "2019-11-16 17:05:10",
         updated_at: "2019-11-16 17:05:10",
       },
     ],
   }

When I'm trying to show the adjustments in my view, I get an empty list.

  @foreach ($comment->adjustments as $user)
        <li> on </li>
    @endforeach

In my products controller (a user makes comments on products) I have the following code in my show function

public function show(products $product, comments $comment, User $user)
{
    return view ('products.show', compact('product'), compact('comment'));
}

via Chebli Mohamed