Remember to make the .sh file executable with chmod +x
Remember to make the .sh file executable with chmod +x
The Steam controller 2 will be releasing soon if you want trackpads and extra buttons. I also think Valve is licencing to third parties. IIRC 8bitdo will make a Steam Controller
If you want to install up to date packages and make your own environment inside SteamOS you need to use Distrobox. It comes pre-installed.