How to install non steam games and repacks on steam deck the simple way.
Now you can install non steam games a few ways on the steam deck but i found this way very simple and not much can go wrong.

But if you do need help Join the ARG Guilded server today with this link : https://www.guilded.gg/aliengaming

Sd card command : STEAM_COMPAT_MOUNTS=" YOUR PATH HERE " %command%

Make sure where it says YOUR PATH HERE you in pact copy and paste your sd card path.