Eloquent relationship through 2 models - laravel

Question

I have Post model:
class Post extends Model
{
use HasFactory;
protected $fillable = [
'category_id',
'user_id',
'img',
'title',
'content',
];
public function user(){
return $this->belongsTo(User::class);
}
public function category(){
return $this->belongsTo(Category::class);
}
public function comments(){
return $this->hasMany(Comment::class)->where('parent_id', '0');
}
}
Comments model:
class Comment extends Model
{
use HasFactory;
protected $fillable = [
'post_id',
'user_id',
'parent_id',
'content',
// 'img'
];
public function user()
{
return $this->belongsTo(User::class);
}
public function replies()
{
return $this->hasMany(Comment::class,'parent_id');
}
}
Can I use the replies function via the post model?
For example:
#foreach($comments->comments->replies->sortByDesc('id') as $comment)
#endforeach
I am just trying to add replies to comments.
<div class="col-md-12">
<div class="blog-comment">
<hr/>
<ul class="comments">
<li class="clearfix">
#foreach($post as $comments)
#foreach($comments->comments->sortByDesc('id') as $comment)
<img src="https://bootdey.com/img/Content/user_1.jpg" class="avatar">
<div class="post-comments">
<p class="meta d-flex justify-content-between">{{ $comments->user->name }}<span>{{ $comments->user->created_at }}</span></p>
<p>
{{ $comment->content }}
</p>
</div>
<form action="{{ route('comment.store') }}" method="POST" class="w-100">
#csrf
<div class="replyform d-flex mb-3">
<input type="hidden" name="post_id" value="{{ $comments->id }}">
<input type="hidden" name="parent_id" value="{{ $comment->id }}">
<input class="d-block ml-auto w-50 align-top" type="text" name="content" required>
<button type="submit" class="offset replysub fas fa-paper-plane ml-1"></button>
</div>
</form>
#endforeach
#endforeach
#foreach($comments->comments->replies->sortByDesc('id') as $comment)
#if($comment->parent_id !== 0)
<ul class="comments">
<li class="clearfix">
<img src="https://bootdey.com/img/Content/user_3.jpg" class="avatar">
<div class="post-comments">
<p class="meta">Dec 20, 2014 JohnDoe says : <i class="pull-right"><small>Reply</small></i></p>
<p>
{{ $comment->content }}
</p>
</div>
<input class="replyform d-block ml-auto mb-3 w-50" type="text" name="" value="">
</li>
</ul>
#endif
#endforeach
</li>
</ul>
</div>
</div>
Of course, I can take and pass one more variable to the template, but I heard that you shouldn't do this, it overloads the controller. Therefore, I try to do it through an eloquent relationship.
P.S. Or is there a way to do it in the post model? Like:
public function replies(){
return $this->hasMany(Comment::class)->where('parent_id', 'id(of parent comment)');
}