my domain problem

1. Point your domain https://madebymt.com/ to folder name “blog” (This can be achieved using your hosting C panel)
2. Next login to WordPress using https://madebymt.com/wp-admin or https://madebymt.com/blog/wp-admin

Make these changes
Go to General Settings
WordPress Address (URL)

Changes
From https://madebymt.com/blog/ to https://madebymt.com/

Site Address (URL)
Changes
From https://madebymt.com/blog/ to https://madebymt.com/

Thank you for answer my question.
I went to change general setting to change URL first, then everything goes wrong, now I can’t get in both of this: https://madebymt.com/wp-admin or https://madebymt.com/blog/wp-admin

So there’s no other way I can get in just fixing back to the original setting? Or I need to redo all over again?