Linux wrapper tool for use with the Steam client for custom launch options and 3rd party programs
I think you should give Steam Tinker Launch a try, I use it to launch cheat engine with my game, it may be the solution you're looking for
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
How to install Better SADX on Steam Deck
1 project | reddit.com/r/linux_gaming | 22 May 2022
Can't launch SnowRunner through Proton
1 project | reddit.com/r/LinuxCrackSupport | 19 May 2022
[TEST] concatenate multiple game launch options (f.e. gamemode, mangohud, gamescope, proton version, steam linux runtime) · Issue #465 · frostworx/steamtinkerlaunch
1 project | reddit.com/r/SteamTinkerLaunch | 17 May 2022
Nexus mods on Skyrim SE on steam deck?
2 projects | reddit.com/r/skyrimmods | 17 May 2022
The newest way to install vcred/other dependencies files into a game's proton layer.
1 project | reddit.com/r/SteamPlay | 16 May 2022