If you're having problems with MSFS 2024 detecting your HOTAS, I would recommend double-checking the udev permissions for the devices. There is a huge chance that they're set so that only root can see the hidraw (/dev/hidraw*) devices and this means that MSFS 2024 cannot use them properly.

To remedy, I added the 60-steam-input.rules file to /etc/udev/rules.d with the following contents:

# VKB Stuff
KERNEL=="hidraw*", ATTRS{idVendor}=="231d", ATTRS{idProduct}=="0126", MODE="0666"
KERNEL=="hidraw*", ATTRS{idVendor}=="231d", ATTRS{idProduct}=="012d", MODE="0666"

Your Vendor/Product IDs will be different depending on your HOTAS setup. A quick lsusb will show you what the Vendor/Product IDs should be.