Mic not working in voice chat but working on mic-test

Hello,

unfortunately you can't hear me in Discord voice channels. But it works in the microphone test on Discord. What is the reason for this? It's been like this for years on my PC. I have already reinstalled Discord, but it changed nothing. It is only working with web browser. Yes, I have tried several headsets. The latest drivers from the headset are already on my Windows PC.