search result with search term with category in wordpress

<?php
/**
 * The template for displaying Search Results pages.
 */
 get_header();
?>
<?php
$s = $_GET['s'];
$post_type = $_GET['post_type'];
$cat_terms = $_GET['cat_terms'];

$category_ID = get_category_id($cat_terms);
 ?>
 <?php
     $search_args = array( 'post_type' => 'listing', 'orderby' => 'post_date', 's' => $_GET['s'], 'posts_per_page' => -1, 'order' => 'DESC',  'post_status'  => 'publish');

$cat_args= array(
            'post_type' => 'listing',
            'order' => 'DESC',
'orderby' => 'post_date',
            'post_status' => 'publish',
'posts_per_page' => -1,
       'tax_query' => array(
            array(
                'taxonomy' => 'education_type',
                'field' => 'term_id',
                'terms'    => $category_ID
            ),
       ),
   );
 
   if(isset($cat_terms))
   {
        $final_posts = array_merge( $search_args, $cat_args );
$loop = new WP_Query( $final_posts );
while ( $loop->have_posts() ) : $loop->the_post();
the_title();
echo '<br>';
endwhile;
   }
   else
   {
     $loop = new WP_Query( $search_args );
     while ( $loop->have_posts() ) : $loop->the_post();
the_title();
echo '<br>';
  endwhile;
     
   }

  ?>
 
<?php get_footer(); ?>