sijsoftware

I am using wp_insert_post_data() function to publish posts that are in pending post status. what i want to accomplish is increment post title on post publish. I figure it out that wp_insert_post_data will insert post data on post save and update. My problem is i want to publish post with increment post title but not on post update.

add_filter( 'wp_insert_post_data' , 'modify_post_title' , '99', 2 );  
function modify_post_title( $data , $postarr ) {
    
  // Check for the custom post type and it's status
    // We only need to modify it when it's going to be published
    
    $posts_status = ['publish'];
    if( $data['post_type'] == 'matrimony' && in_array($data['post_status'], $posts_status)) {
        
        $count_posts = wp_count_posts('matrimony');
    	$published_posts = $count_posts->publish;
    	$pending_posts = $count_posts->pending;
      	if ($published_posts == 0) {
            if ($pending_posts == 0) {
                $data['post_title'] = 'ACMB' . '-1';
		        $data['post_name'] = sanitize_title($data['post_title']);
            }
            else{
                // Get the most recent post
                $newposts = array(
                    'numberposts' => 1,
                    'orderby' => 'post_date',
                    'order' => 'DESC',
                    'post_type' => 'matrimony',
                    'post_status' => 'publish'
                );
       
                $last_post = wp_get_recent_posts($newposts);
                $last__post_title = $last_post['0']['post_title'];
      	        $number = preg_split('/[^[:alnum:]]+/', $last__post_title);
                $number = $number[1] + 1;
                
                // Save the title.
                $data['post_title'] = 'ACMB' . '-' . $number;
		        $data['post_name'] = sanitize_title($data['post_title']);
            }
    	} 
    	else {

        // Get the most recent post
        $newposts = array(
                    'numberposts' => 1,
                    'orderby' => 'post_date',
                    'order' => 'DESC',
                    'post_type' => 'matrimony',
                    'post_status' => 'publish'
                );
       
        $last_post = wp_get_recent_posts($newposts);
        $last__post_title = $last_post['0']['post_title'];
      	$number = preg_split('/[^[:alnum:]]+/', $last__post_title);
        $number = $number[1] + 1;
        
        // Save the title.
        $data['post_title'] = 'ACMB' . '-' . $number;
	    $data['post_name'] = sanitize_title($data['post_title']);
        
        
    }
    }
    return $data;
}

Above code will count posts from custom post type and find latest post by date created and increment the post title like ACMB-1,2,3…so on
My problem is this function fires on update post which i dont want