I have had many mouses. Most of them broke the side buttons. The scroll wheel usually lasts as much as the side buttons. After that. The left/right main buttons fail.
I have never had a mouse with a broken sensor though. I would look for solutions in the software (calibration and settings). But it’s not impossible that it’s broken.
Doesn’t speed/acceleration affect it? If that is the case, that’s another pro for bikes.