If you use MacOS and have multiple audio devices, I can’t recommend finetune enough. Open source audio router. You can set per application audio devices, which is good if you have a nice mixed audio setup.

I use a external mixer and I have 3 channels set to discord voice, youtube audio, and moonlight audio; lets me set volumes on the fly in a really nice way. Real quality of life multiplier.

https://github.com/ronitsingh10/FineTune