There is nothing wrong with your game. The helos are very difficult to fly if you're transitioning from fixed wing aircraft.
Rule #1. Forget everything you learned about flying.
Rule #2. Your throttle acts as your collective. This controls your vertical flight.
Rule #3. Your yoke or joystick will act as your cyclic. This controls your lateral movement. (e.g. forward, backward, left, right, etc.)
Rule #4. Your rudder will control your rotation.
Check out the training at
www.hovercontrol.com, and practice practice practice!