problem with connect to Apple ID via iTunes

Hi all,

can you help me please with my problem with log in to Apple ID on my iphone 13. When I want instalation some apps the system asked me for log in to Apple ID. But when I try to login, the system told me message: Apple ID wans't been used in iTunes store. Go to the itone store and login there. So, when I go there to iTunes and I try login there I have only one possibility: login by Apple ID. So, I can't to do it. It is like a circle - I can't use my Apple ID log in to log on iTunes and I can't log in via Apple ID because I did not log in to iTunes yet.

Can you help me, plese?

Ondrej