Look for someone that can help you with your hand technique and basic fundamentals. I’m sure their lots of very good teachers in Germany but they might not be in your area. Be ready to travel a bit if necessary or maybe you could do some sort of combination of in person and remote ( Zoom , Skype….) lessons. If you can’t find anyone in Germany, you can do fully remote lesson. You’re lucky to have these options. In my day, I’d drive a couple of hours for lessons.