Ark Xbox Game Pass PC change language?

I hope someone can help me. I downloaded the game Ark: Survival Evolved from the X-Box Gme Pass. Unfortunately it is in English. I have now read on several pages that the game is also available in German and various other languages.

Unfortunately, the tips are 99% for the Steam version.

Do you have any idea or idea how I can get the game switched to German? And first of all: No, it has nothing to do with my language or region on the PC. This is all set in German and Germany.

It would be a dream if someone could help me. It must be possible to be able to play the game in German somehow.

Unfortunately it does not work.