Wordpress doesn't show up my page template

I have created a template called page-example-template.php. Then I go to my home page and choose this template but when I use this template, it doesn't show up in my home page.

I put some code to try but actually there is a carousel, not some paragraph.

here is the code:

    <?php
/*
Template Name: Example Template
*/
?>

   <div class="container pb-5">
      <p> Example </p>
   </div>