That’s surprising given how close you are to recreational use legalization. Here in Poland MM is legal but we don’t have any producers and get fair chunk from Germany (Aurora Deutschland, 420 Pharma).

At the same time medical marijuana business got so silly that you basically go to a website, fill out a form, pay ~€20 fee and get an e-prescription in a couple of hours. There’s been some ineffective attempts at cracking down on it in the past weeks that resulted in slight fee increase.

Medical marijuana is legal in Germany. If OP needs it for health reasons he could go through legitimate process.

THC will cause anxiety and paranoia if your tolerance is low or you use particularly stimulating cannabis strain. This is where CBD is very useful because it decreases psychedelic effect. You can use either a balanced strain (equal or similar THC / CBD content) or supplement CBD in other form.