Universal Mouse Troubleshooting Guide
1) Restarts can do wonders. Save your work and try a restart.
2) If it is a wireless one, try changing the batteries. Apple magic mouse battery level is shown in the mac.
3) Make sure the issue is with YOUR mouse. Plug in another mouse and check for the same issues. If the other one works fine, you-know-what change the mouse.
4) Wait! before you discard your old one, check it in another pc and check whether it works. if it does, keep the mouse. There was something wrong with drivers or the connection in your PC.
5)If you have any mouse-related software, uninstall them. (which you won't need, they are optional even for touch pads; unless you do very specific work with your mouse).
6) Restart again.
7) If all till 6) fails buy a new cheap one until you discard or fix your old one. They are quite cheap and can be bought without crowdfunding help.
8) If you still want to persist with your old mouse, check everything from 1) again and this time check receivers, dust and do everything you can find on google.
9) Do 8) until you get tired and move onto your new mouse.
10) NEVER EVER commit suicide over a mouse.