Seem to be unavailable in German App Store?…
I know startups who don't publish to certain EU countries because they have to fill "a big scary form"
You can always switch to US app store region (cancel exisiting subscriptions, leave family, and wait until apple music/tv subscription is expired).
You won’t be able to use non-US credit card for the app store but you can always buy US virtual apple gift cards on amazon straight from apple shop there.
Lots of individual / hobbyist developers are no longer publishing to the EU App Store due to Digital Services Act regulation and compliance.