Initial Brightness issues on Steam Deck

Platform: Steam Deck

Do you have any mods? No

Please explain the issue is in as much detail as possible: Downloaded and installed Kingmaker on the Steam Deck. When I fired it up, it had me adjust the brightness settings before the game even started. I set it to where I could barely see the darkest owlcat, but when I run the game, the visuals are too dark to see. Correcting the gamma helps, but how do I reset the initial brightness setting to get the visuals back to square one? The menus are the right brightness/color but there is nowhere in the Steam or Game setting to readjust the initial brightness.

Also, my girlfriend and I share the steam deck, but it will only find and load my file from my steam profile and will not find my girlfriend’s saves game from her steam profile.

How do I fix this?