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I've implemented native gyro aiming in Yamagi Quake 2, working in Windows, Linux & Mac thanks to SDL2:
https://github.com/yquake2/yquake2
It's not yet in a release, but the latest testbuild in Windows has it:
https://deponie.yamagi.org/quake2/windows/testbuilds/quake2-20220617-c6f6a17.zip

Remember to calibrate gyro the first time you play. It can be done in Options -> customize gamepad -> gyro options.

Please tell if you have any trouble with it.