Apart from medical marijuana, cannabis is unlawful in Germany. In-spite of the, the law is kind of lenient around the leisure use of marijuana. If the police uncover you carrying 15g or much less of weed, they're going to take you down to the station for mugshots and questioning. https://cannabis-crew.com/2023/10/10/how-to-order-weed-online-in-frankfurt-germany-as-a-tourist/