I updated my Note 10+ 5G for the November update and since then I cant turn up or down the volume on bluetooth.
Do you have it set on your notification sounds to control the media by the volume button?
Open your sound settings and check for Control Media with Volume Buttons.
Hope this message finds you well!
It wasn't that. When I turned the media volume up or down it didn't change through my headphones but it's fixed now. Thanks though.