See Migrating WordPress to Another Server (part 1)
and https://wordpress.org/support/article/changing-the-site-url/
Additionally, you may need to add the following lines to the top of the wp-config.php file:
define('WP_HOME','http://www.heidididid.com');
define('WP_SITEURL','http://www.heidididid.com');
Finally, you might find that the Home menu button contains the wrong link. Edit the menu item and correct the Home ‘Custom Link’ to point to the correct URL.