SteamOS can’t run .exe alongside game

A while ago I came across a Decky plugin for my Steamdeck that allows you to run a trainer/cheat executable (.exe) alongside a game you want to run it with.

I found this super useful however I’m encountering an issue with running .exe files. So I switched to Desktop Mode and I’m told that “For safety reasons, launching executables is not allowed in this context”

I tried Lutris to run the .exe, and it works somewhat however after the “initialization” the .exe no longer runs on Lutris or by itself.

Is there any way to run a .exe file so I can use the cheat/trainer alongside the game? I’ve tried using proton-tricks, wine, and adding the game to my Steam library as a non steam game (but unfortunately I need to run it alongside the actual game, preferably before the game launches) Any help would be much appreciated.