Fifa 19 Ultimate Nintendo Switch a stupid mistake happened what to do?

I made a giant mistake in Fifa 19 and have only goalkeepers and 23 and can't delete a club. What can I do that I can play again Fifa 19 Ultimate Team that everything runs legally and without calling EA and

With your offline file you can do what you want Ultimate Team is not about you but about their EA server

Yes I know that but what I have forgotten to write that I have only 4 goalkeepers and nothing else

If necessary, reset the game completely

And how? Because this is only my 2nd Fifa game

Delete all game files and reinstall game.

I have already called EA and now everything is back

Then it's good