[tom85]

actually if you add

  define('RELOCATE',true);

The Wordpress will be in the relocate mode the next time you visit wp-login.php. It will reset all the URLs.

Documentation: https://wordpress.org/support/article/changing-the-site-url/...

[maxgashkov]

Yes, I've read this. Unfortunately that's not enough if you have 3rd party themes or plugins installed.