How to uninstall windows 11 pro beta and go back to windows 10 pro

Friend, I'm not a Microsoft employee.
I can't give you a product key because I don't have one!
please go with this computer to the computer service - there they will check it and reinstall the system!
Good luck

are you still available ???

if the problem is not solved?

Can you give me a key for windows 10 pro for free ????

????

are you still working on the problem ??

Unfortunately not

did you manage to do something??

ok, I'm waiting

I have an idea to hold off on further steps and get help in the computer service - there re-installations do often and perhaps bypass this problem

It asks me to enter a mandatory key What to do?

no

Can you move on without entering the key?

But now you are writing about the installed Windows11 - Beta?
ARE you already in the process of reinstalling Windows10?

What should I do if I do not have this option?