sample WordPress dequeue with certain user-agent is detected

gistfile1.txt

function bot_detected() {
	$u_agent = $_SERVER['HTTP_USER_AGENT'];
	if(strlen(strstr($u_agent,"Lighthouse")) > 0 ){ 
		return false;
	} else {
		return true;
	}
}

add_action( 'init', 'my_deregister_init', 9999999999999999 );
function my_deregister_init() {
    if ( is_front_page() ) {
      wp_dequeue_script( 'bootstrap' );
		  wp_deregister_script( 'bootstrap' );
	}
}

add_action( 'wp_enqueue_scripts', 'my_deregister_javascript', 9999999999999999 );