So I got it working. I this:
Okay, there is apparently a module for enabling the driver. Can you try using that?
# Logitech G923
hardware.new-lg4ff.enable = true;
services.udev.packages = with pkgs; [ oversteer ];
Also, the third line should add the udev rules from oversteer, so technically the code block above should be all you need to get this working.
After a reboot i saw that my Joystick a Logitech 3d Extreme was also recognised as logitech in dmesg.
After I unplugged it, rebootet and the wheel was recognised.
A Big Thank you to eljamm for his Help.
I hope this can help anyone who has the same issue.