capabilities – Totally different advertisements on each web site on multisite surroundings

I’m utilizing following code to insert advert in article, after eighth paragraph, by means of capabilities.php file:

add_filter( 'the_content', 'prefix_insert_post_ads' );
  
operate prefix_insert_post_ads( $content material ) 
      
    $ad_code="
Ads code goes here
";
  
    if ( is_single() && ! is_admin() ) 
        return prefix_insert_after_paragraph( $ad_code, 8, $content material );
    
      
    return $content material;

   
   
operate prefix_insert_after_paragraph( $insertion, $paragraph_id,...