Why does my left trigger and left shoulder button feels janky?

Hey All!

So I've got this controller for about 3 years now, never been smashed to the desk, droped or thrown and never spilled anything on it.
I haven't used it in a while like in half a year, but yesterday I wanted to play some games and when it came to pressing the left trigger it was really weird.
I don't really know how to describe it, it feels like the spring that is making the trigger come back is not properly placed, also the left shoulder button has a very minimal travel. Compared to the right one it is almost the fourth of it, almost feels stuck.

Also the trigger sometimes makes a very loud click after the shoulderbutton been pressed.

Has anybody ever encountered this or am I a lucky first?
My initial tought was that some tiny piece of plastic broke somehow, and the spring is missplaced, or maybe the spring it self broke, but I don't really know much about the internal placement of things.
If anybody can give me something to go on it would be greatly appriciated.

Have a nice one.
(Sorry if my english is not gramatically correct or has any misspelling in it.)