Side Buttons

My Red Dragon mouse decide it didn't like the side button anymore, so It popped out and I have searched through the internet trying to find somebody that knew how to fix it, alas little to no luck. My question is: Does anybody know how to refit a side mouse button that has popped off ? My...

I would like to buy a new mouse and I currently have a Razer Naga 2014. I am using the lowest buttons on this one (1,4,7,10 in this case) and after 5 years I am used to it. So that's why I am looking for mouses with low buttons.