Number laravel use withCount get the associated model list

Model which

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    //

   protected $table = "posts";
   public $primaryKey = 'id';

   public function user()
   {
      return $this->belongsTo("App\Models\User","user_id",'id');
   }

   public function comments()
   {
      return $this->hasMany('App\Models\Comment','post_id','id')->orderBy("created_at",'desc');
   }
}

The controller lookup table 
$ posts = Post :: withCount ( " comments") -> orderBy ( "created_at", 'desc') -> paginate (6); 


view used inside

{{ $post->comments_count }}