How to fix the left and right rotation of bicycle seat?

1. First find the quick release hoop under the seat, break it in the opposite direction, and rotate the quick release hoop.

2. Secondly, raise or lower the seat tube and adjust it as needed. Hold the seat tube with one hand to prevent it from deviating, and adjust the quick release hoop with the other hand and rotate it clockwise until it is locked.

3. Then check whether the seat is fixed with the seat tube, whether it will continue to rotate, adjust it if it will rotate, and continue to lock and fasten it.

4. Finally, check the screws at the joint between the seat and the seat tube. If the screw is loose, it can be locked with a wrench to prevent the seat from falling off during the ride.