Youtube app stops working?

I have the problem that 3 days youtube not funktoniert. If I go into the youtube app, it loads for an infinite amount of time and I can't log in. I always have to check my internet connection. And if I go through google on Youtube it works I have the phone Huawei P20 I hope someone can help.

Restart your phone and then see if it works. Otherwise uninstall YT and then reinstall. If at all, I do not know what else to do.

I've already tried unfortunately did not work.