The forked lever from below is responsible for the thrust of the main rotor (that is, for the height, roughly speaking),
the lever in the middle is responsible for the direction of the nose of the helicopter.

Pict.: ECL - Engine Control Lever - "Lower lever" ACK - Aircraft Control Knob - The "upper lever"

If you pull the lower lever up or down, then you will fly up or down, respectively, or if the nose of the helicopter is tilted in some direction, you will fly faster or slower as well. The tilt and direction of the nose of the helicopter is responsible for which way the plane will fly. To tilt the nose of the helicopter in the direction you need, just tilt the upper lever, just don't overdo it. To turn the helicopter in a different direction, grab the upper lever, WITHOUT tilting the controller, keep it vertical and rotate it around its axis, but also do not overdo it.

And now the most important thing. How to land a helicopter: first, align the helicopter so that it does not wobble and ideally does not move, then CAREFULLY, without accelerating, lower the height lever (lower), if the helicopter falls too fast, pull it up. The main thing is not to try to land the helicopter when it literally falls, because because of the high speed it will crash. Gently slide down until you touch the ground. If the helicopter is intact, then congratulations, you control the helicopter better than 95% of the players!