So, the most sustainable thing would be to use the old Samsung head sets I own for 10+ years, which are still very good and I thought "What could go wrong to buy such a USB-C Adapter from Ebay"

Well, those adapters are crap. The microphone is really quiet. People can barely hear me, but sound is okay. But it's still garbage, because why having a head set if only music works, but no phone calls?

In a matrix chat someone told me that most of those adapters are garbage and only a few one can be used with a microphone, like those from Google and Apple.

The bad news is, I couldn't find any used adapters from Google in Germany, but two from Apple. I hate Apple, but at least they didn't make money directly with me.

Let's see if those are really so good.

Have you had any issues with the mic and the Google adapter?