Before you do anything drastic, restart the hardware.
Sometimes, a macOS update or an accidental click can disable scrolling or change its behavior. How To FIX Magic Mouse Not Scrolling! (2025) mac mouse not scrolling
If you've tried all the above steps and the issue persists, it's possible that there's an OS-related issue: Before you do anything drastic, restart the hardware
If you have an Apple Silicon Mac (M1, M2, M3), skip this—it doesn’t apply. Before you do anything drastic