How to get a German name

I am 14 years old and studying in gymunasium, Heimstadt, Germany. You don't really need a name. When I was studying German, there were several classmates named mokka and kekks (cookies). When abroad, Germans find it very practical. I don't have a special German name. People just call me Jin (my surname is Jin), and Germans feel natural. In fact, there is no need for the landlord to entangle any German names. Being yourself is the most important thing. One more thing, the more German the landlord's name is, the easier it is for Germans to give you a nickname. This is not good. Just call the landlord Liu. There is also a good name CANcer from Latin, which means cancer. Or christal comes from Latin, which means crystal.

I hope that the landlord's German will improve and be adopted.