I've recently switched my primary PC to Linux (Specifically POP_OS). Overall the experience has been incredible. Far less difficult than I feared.
One area that has been a constant annoyance is sound device management. The abilities to independently set volumes by program, and switch between sound devices easily (as opposed to going into settings every time) have eluded me. Perhaps I'm just missing something, but my assumption is that there's a packaged solution for this. I've looked around and seen a few recommendations for pavucontrol, but wanted to check here and see what other people use and why. I'm open to suggestions.
Okay the extension I have is called “Sound Input & Output Device Chooser.” I think that if you install this and the Other extension above your problem will be solved.
KDE's default audio widget is so good, you can congifure your audio devices and mic individually but also on a per app basis, but I suppose pop os doesn't use kde
This is what I use for switching: https://pastebin.com/J5VT03eq
It uses pactl (should work with both Pulse and pipewire-pulse) and KDialog to list available sinks.