Php mysql search engine showing all results instead of specific

hello friends,

I am trying to build a php mysql search engine following a tutorial
but somehow when i search for specific name its displaying all results
whats wrong here ?

here is my code

<?php

require "connect.inc.php";
global $conn;
  $search_name = $_POST["search_name"];
if(isset($search_name)){
  
       if(!empty($search_name)){
        
          $query = "SELECT name FROM names WHERE name LIKE '%" .mysqli_real_escape_string($search_name). "%'";
          $query_run =...

PHP:

Php mysql search engine showing all results instead of specific

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