Looks like Xbox button is caught/damaged you’ll be able to clear inside (technically the perimeters) of the buttons utilizing a q-tip and a few rubbing alcohol. Not dripping however simply moist to scrape any gunk inside. If it is dripping you may seemingly harm the within and it will be unfixable. However after scrubbing with the q-tip you’ll be able to take a bit piece of paper, fold it as much as the specified thickness and stick it in there like a bit bank card and get out whatevers making your buttons sticky. If essential rinse and repeat after 3 or 4 go’s you ought to be all set. I’ve had to do that with controllers previously after spilling a drink or syrup or some silly shit on it