I've just bought and installed Glider Simulator. I am incapable of using a keyboard or joypad to control a glider in pitch, roll and yaw. I need to use an ailerons and elevator joystick, very preferably with rudder control. I am willing to use a keyboard to control flaps, spoilers, engine revs and suchlike.

 

My Thrustmaster HOTAS 4 joystick with rudder pedals doesn't function correctly with Gliding Simulator. Why is that and what is the solution, please?

 

The X52 and X56 are very expensive for just one simulator. Are there cheaper joysticks that definitely will function correctly, please?

 

Many thanks in anticipation.

You need to assign the axes and buttons yourself.
Don't rely on default assignments.
If you are looking for an unexpensive joystick, you may consider this one : 
https://www.aerosoft.com/en/shop/flight/hardware/joysticks/44/thrustmaster-t.flight-stick-x?c=833