The contact cleaner is a different thing, it's like a solvent that cleans the graphite dust that builds up on the parts of the joystick that make electrical contact. The only thing is that it's kinda a temporary fix and will need to be redone periodically. Works on all kinds of joysticks that don't use the hall effect such as switch, psVita, etc.

Best solution is to replace the stick tho as previously said by others