search result page result display first then post

Hi everyone
I tried to add a function for WP default search, I will like to make it result to shoe page items first, then post items, but it’s not quite working yet.
I’m not using any plugin for search.
Here’s my code:

First one

<?php 
	function filter_search($query) {
    if ($query->is_search) {
    $query->set('post_type', array('page', 'post'));
    
    };
    return $query;
};
add_filter('pre_get_posts', 'filter_search');
?>

Second one I tried:

<?php
	function filter_search($query) {
    if ($query->is_search) {
    $query->set('post_type', 
    	   array(
    	   'post_type'=>'page', 
    	   'orderby' => 'title',
		   'order'   => 'DESC',
		   )
           );
} else {
    $query->set('post_type', 
    	   array(
    	   'post_type'=>'post', 
		   'order'   => 'DESC',
		   )
    	   );
};

return $query;
add_filter('pre_get_posts', 'filter_search');
?>

Thanks for the help!