A times I've had problems with mice where they start double clicking when I don't want them too. Finally tried to fix it, and it worked! Last time I ended up buying a new mouse—

This video is what helped, and is similar to the mouse I have, not sure how common this switch is:

• Logitech Performance MX Mouse Micro Switch Fix

Took me a few watches, and watching some other videos, to fully understand what he is doing, as in how he is bending the spring, and how he is putting it back on, but in the end it's worked.