Thank you for the system diagnosis.

According to the diagnosis there is nothing to be found about audio issues, which means, that the issue should just be a pure configuration issue.

Maybe it already is enough to delete all audio configuration files and to restart the device, as this would force the system to recreate said configs from the normal default templates.  

 • ~/.local/state/wireplumber/
 • ~/.config/pulse/
 • ~/.config/pipwire/
 • ~/.config/wireplumber/

Some of these folders might not exist. Just delete the ones that do.
Now Restart the device

If this didn't help, please send us the output of the following terminal commands:  
 
 • pactl info
 • systemctl --user status pipewire
 • systemctl --user status wireplumber.service