Try using Proton Experimental.

I use my pixel buds pro and they work just fine with low latency. I have it so it audio switches seamlessly when I turn it on.

I use it almost everyday. I’m getting through my steam library more so than I was on my PC. It makes me want to play more games. I also use it to play emulators which with a bigger screen and power it’s better than my switch. I dock it to my TV and take it on the go and recently on the plane.