how to put wordpress pages only inside public_html…

Might consider using this instead:
Giving_WordPress_Its_Own_Directory

Essentially, to make WordPress available at https://mydomain.com just change in Settings->General, the Blog address (URL) to https://mydomain.com and put this index.php file in your public_html folder:

<?php
/* Short and sweet */
define('WP_USE_THEMES', true);
require('./wordpress/wp-blog-header.php');
?>

Then update your permalinks in Settings->Permalinks.

Thank you very much MichaelH.Thank you.
bikram