The wp-admin page is gone

I was changing my website url (home adress) to another url (ex id=40) I can`t remember the number.
I got the message it didnt exists, and then suddenly my log in page is gone ( so I cant correct the url to the correct adress again )and I don`t know the url.

I set the wordpress to be something else than https://www.kjagen.com/wordpress and how can I get back to that? I don`t even know where to log in?

The https://www.kjagen.com/wordpress/wp-admin isn`t there

What should I do???