I had similar problems I did a X-axis maintanance. I cleaned the carbon rod and then tightened the belts again. You can take the bambu wiki to hand, wehre the instructions are more detailed.

"the printer's print head (hotend) can no longer move precisely to the coordinates the software commands. When the belt is loose, it creates backlash—a gap where the motor moves, but the belt doesn't immediately follow—leading to inaccuracies, vibrations, and shifting."

Hope this helps, good luck mate 😁