Oh, cool. It’s possible it’s just the version of proton it’s defaulting to if multiple games are crashing.

For X-Plane 11 I would look at what’s listed here on Protondb for a potential fix. More that likely you’ll find the answer you need there.

If that doesn’t work, you could also try installing additional versions of Proton (Glorious Eggroll usually contains fixes that in my experience, just work). You should be able to install them from the Discover store. For that I recommend ProtonPlus if you don’t already have that installed.

And no apology necessary! Gaming on Linux can be frustrating at times. It’s been a while since I’ve seen a game of mine struggle to run, but before Valve released proton it was a massive headache.

Hope that helps get your game running!