I need a lock for my bathroom door but I am scared that it will break and lock me in. It's a windowless room which makes the fear worse. Is there a kind of lock that can't malfunction? I like those large latch type locks that are usually on disabled toilets but can't find them online as I'm unsure of their name. I tried using a wedge under the door but it didn't work as there isn't enough gap under it.
Any ideas?