Those games require a new launcher to be played.
Also you need to installl protontricks
type protontricks --gui and run winecfg
add all the x3audio, xapofx1, xaudio2 dlls. this will get the sound working
[https://github.com/ValveSoftware/Proton/issues/1981#issuecomment-450759700]()
Here is a code for a better launcher by me on github