The Stereo Mode of my Headphones Can't be Activated on Windows 11

I have a problem since I installed Windows 11. The sound of my headphones suck. So I looked at a lot of forums to understand the problem. What I understood is that on Windows 10 there were like two devices (stereo and hand-free) but since Windows 11 they are grouped together. And the solution will be to go in the sound panel then in the microphone tab and inactivate our headphones to force stereo mode. The problem being the following: the stereo mode appears well but can't be activated. (my headphones are AIAIAI tm2 (the brand, shown in colors). Here are some screenshots:

Question by winter on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.