FAQ submenu as a top level menu

Hi !

Hope you're good today !

I'm trying to remove the "Support" submenu and then add the FAQ page as a top level menu in the admin.

I've used unset(''); to remove the submenus, it disappears well ! Now I can't add the "FAQ" top level menu since add_menu_page( 'FAQ', 'FAQ', 'manage_options', 'admin.php?page=support-faq', '', 'dashicons-faq', 99 ); doesn't work...

I hope you can help me...

Thanks a lot !