how to apply filter on pivot table??facing some issue

Model of Category

public function lists(){
return $this->belongsToMany(listing::class);
}

Model of Listing

public function categories(){
return $this->belongsToMany(Category::class)->withPivot(['category_id','listing_id']); }

Controller: when i die dumb this query then i get all lists that is in listings table but i just want to get those lists whose have these categories

 if($request->categories){
$var=$request->categories;//data in array 1,2,3
$lists =Listing::with(['categories' => function ($query) use($var) {
$query->whereIn('category_id',['=',$var]);

}])->get();
dd($lists);//

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