controller trigger doesn't have click or right inpuit with full press

Whenever I pull the trigger all the way in on my right controller it doesn't have a click and some games require the last click for an input making them unplayable. I've contacted steam support and they couldn't help because it's out of warranty (side note: that's stupid and should just have to make you pay for a repair) and I can't buy a new one because they're out of stock. I've looked everywhere for a solution or at least someone with the same problem as me but haven't found anything.

Thanks in advance for helping.