Light motorcycles… where and which ones?

Hello community, I made my car driver’s license 2 years ago and of course have the class M in it. I have been driving a 50cc Suzuki Katana AY 50 WR for 1 year now, only unfortunately there was a lot of tinkering and each of the parts replaced or repaired will be too stupid and too expensive for me. Now I decided to get a new one and I also came to the 2 wheels, which look like motorcycles. So far I haven’t seen them here in Dortmund. Neither on roads nor The Yamaha TRZ-50 in my eye. Then I read on the Internet that there are also cheap brands, like Yamasaki or Zipp… but they should all come from China and hear from, the parts don’t last long until the first mistake. Well, let’s get to the question. Which brand can you recommend? I go up to approx. 240€. Cheaper would be better, of course, but quality is more important. And most importantly, where do you get light motorcycles? Here in Dortmund we have natural bikes. h many partners of Yamaha, Suzuki, etc… I would be happy about an answer. Unfortunately I am very inexperienced and my searches do not result in any successes. Thanks in advance. Mfg Florian