Head tracking is a gamechanger for flying or driving games. I’ve used opentrack successfully with Star Citizen via lutris but have been struggling to get it working for steam games. LookPilot seems to work well and is fairly cheap but isn’t FOSS. I know there are loads of other alternatives so I’m wondering what have you found that works well?
For MSFS 2024 I use the Windows version of opentrack, just installed inside the proton prefix using protontricks (use the exe.xml trick to launch it at startup).