In Germany you unfortunately have to dox yourself with stuff like this, and I really dont want people to know my address.
I know people will argue "thats only for business websites", but that's far from the truth. It's for every website that might(!) has a business aspect. So I couldn't even name products on a personal blog as that could be seen as advertisment that I got paid for...
I hate this country so much.
To register a .de domain you need to give your address and legal name. And your national ccTLD is usually the only one that you are sure won't get pulled under you because there are some legally binding rules around it unlike .tv or .me
The law is mostly targeted at media and to some lesser extend businesses. The law is not enforced, and would be hard to enforce for individuals. For individuals, the law contradict multiple privacy laws, possibly the GDPR, and it might also conflict with some past rulings on the article 11th of the European Convention on Human rights. This article guarantees freedom of speech without persecutions, and one way to guarantee that is through anonymity.
My non-lawyer opinion is: people setting up an "Impressum" page on their personal websites in Germany are over-interpretating the law.
This is also the opinion of german lawyers[1]: "Impressumspflicht schön und gut - aber muss wirklich jeder Webseiten-Inhaber ein Impressum auf seiner Website führen? Ganz klar: Nein. Die Verpflichtung ein Impressum auf der eigenen Webseite einzubinden gilt nur bei geschäftsmäßigen Online-Diensten. Im Umkehrschluss brauchen Betreiber von Websites, die ausschließlich persönlichen oder familiären Zwecken dienen kein Impressum auf ihrer Homepage einzubinden."
Regardless of this, if you still want to put an "Impressum" page just to be safe, you can buy a "Postfach" from the deutsche post for ~€20/year and use that as your "Impressum" address, this way you don't have to doxx yourself.
[1] https://www.e-recht24.de/impressum/13095-impressum-fuer-die-...