This helped me I have had this problem for 6 months I just assumed that it was a hardware problem and I finally decided to try to see if it was just my settings and so I searched up “How to fix volume distribution windows 10”
Long story short thank you
However, I did, years ago, purposefully load all the sound into one channel because I only had one earbud at the time. Maybe this change is persisting somehow beyond all the settings I can see?
I’ve updated the steps. Hopefully it helps. Cheers!