Ensure the file is named exactly keys.txt .
For further information and community support, check out the following resources: keystxt for cemu better
[Analog] RightStick_X = M:X ; mouse X for camera/aim RightStick_Y = M:Y ; mouse Y for camera/aim RightStick_Sensitivity = 1.6 RightStick_Deadzone = 0.06 RightStick_InvertY = True Ensure the file is named exactly keys