pavucontrol (Volume Control) does not work on Bazzite

I assume I need to do something in Flatseal to make it work, but I'm not sure, I'd apprecicate any advise.

The issue currently is that the sliders don't actually apply to my headphones or anything.

Solution

Actually, I don't care any more. The other one that does work, does support over amplication, which is what I needed.