lessons in german language possible?

Nein. They are making a little progress with foreign language content. I see there are articles in German.

But the task of translating 4,000 lessons is large. I do not think it will come soon.

IM Elli Paehtz does a stream here in german from now and then you may like it she is one of the strongest female players on earth

They could start by making an international forum section where foreign languages are welcomed and not just ridiculed by those who don't understand them and to prove this site is truly international and not just biased towards Anglophones!

You can Learn German from here: https://www.sevenmentor.com/german-language-training-in-bangalore

Are their chess tutors based in Germany. My nephew is looking to learn chess but we prefer a German Tutor preferably based natively out here.

Any recommendations for a tutor would be welcome.

Also is their a chess.com app completely in German language.

Can't really see an option to change languages in my portal. 

???

   ---   Try watching The Harald Schmidt Show ( re-runs are in German on YouTube ).

Nein indeed, I don't think so that you can change the lessons to German

The app generally uses the device language but can be changed. There are internationalization features in the apps including translations of the UI features.