Thank you very much for your kind offer! I'm glad to hear that you're enjoying Zorin OS.
You're able to submit translations for some of our exclusive Zorin apps (like Zorin Appearance and the Upgrade Zorin OS app) on our translations website:
As Zorin OS is based on Ubuntu and upstream projects within this umbrella, we can also suggest contributing translations through Ubuntu for other apps and software. That way, your work can benefit both Zorin OS and other projects using the same software: Translations/QuickStartGuide - Ubuntu Wiki
You can find their German language translation page here: German (de) : Noble (24.04) : Translations : Ubuntu