Admin panel has disappeared

the only changes would be:

root or public directory now has your htaccess and an extra modified index.php
you added /wordpress/ (or whatever your new directory is called) before wp-blog-header.php

wordpress in the next level directory still has the original index.php

nothing else in the wordpress directory content or structure changes

Er, what? My original admin login had /wordpress/ in it already. https://hskinn.com/wordpress/wp-admin/ is the file that’s missing.

You referred to moving wordpress down one level from the root directory into a new subdirectory.

When you do that, you have to create a duplicate index.php (the original stays in the wordpress directory). In the new index.php, you add the name of the new subdirectory just before the call for wp-blog-header. Your htaccess file also stays in the root.

The WordPress package just moves one level with no changes.

Your wp-admin folder is, yes, inside the wordpress folder. The folders don’t get renamed. You just need that new index.php at the original root level to start the call to the index.php in the wordpress folder.

If you are missing files, or if some did not survive a move intact, then you need to replace them.