Thank you for your answers.
Too bad though, it's a great phone.

I have deactivated notifications for most apps under App permissions. The only thing I couldn't get rid of was the constant intrusive message to set up the device search. But yes: you have to spend a lot of time setting it up so that it doesn't beep every 5 minutes

Unfortunately, this is the case.

Could deactivate some in the settings

Yes, it's still like that, unfortunately