Gamecube Controller problems

[SighDucky]

Sometimes when i press down on the z button it makes a louder sound and is stiff and after, it is less stiff, I also hear the plastic crack when i press down on the d pad or whenever i put some pressure on the controller.

i did get this controller online so it came with those problems.


i do have video showcasing these problems:
https://www.youtube.com/watch?v=Tfw9l-6I2ZQ




any way to fix these problems?




p.s you may want to turn the volume up on the video to hear better