It is possible to map mouse x axis to gamepad x axis, its not practical because of constant mouse dragging that is required to maintain a certain position. Possible solution is to make mouse change and maintain the position of virtual joystick (axis). (Like something you can do with vJoy on windows) (example: https://steamcommunity.com/app/310560/discussions/0/517142892065610935) Sorry for my bad explanation, tell me if you need more details.
It is possible to map mouse x axis to gamepad x axis, its not practical because of constant mouse dragging that is required to maintain a certain position. Possible solution is to make mouse change and maintain the position of virtual joystick (axis). (Like something you can do with vJoy on windows) (example: https://steamcommunity.com/app/310560/discussions/0/517142892065610935) Sorry for my bad explanation, tell me if you need more details.