After reading this thread and searching around, I find that there are very little mouse that make use of the ring finger ergonomically like Alien G9X, the only other mouse is Logitech G600 but it is more costly and my thumb will not be comfortably press the right key.

So I went ahead and bought another G9X in case my first one broke.

I don't know what's happened, but it started to work normal again.

Anyway, thanks to all of you for the advices.

I told you throwing it against the wall would work. :D

Could it be the cable? Just thinking my Razer started playing up, clicks not registering, jumping. But it would get better, then eventually it just didn't recognise most of the time. It was the cable.

It's a MS wireless mouse. Maybe interferences?

As I'm said before, these type of mouses aren't compatible with my webcam.
https://flic.kr/p/DjJqfC