My website has gone

https://www.h2oservices.org/wordpress/wp-login.php

Did you change the URLs in your dashboard, or just the location of your wordpress files from root to the sub-directory? Or did you intend to leave your blog in the wordpress directory, but serve it from root? If that is the case, you need to copy some files to the root directory to make it work.

Giving WordPress its Own Directory While Leaving Your Blog in the Root Directory

Yes I think I changed the urls in the dashboard as I wanted the website address to be just https://www.h2oservices.org as it was only working with the wordpress after it. How do I copy files to the root directory?

Moving WordPress