Yeah for tech stuff stack exchange is the way to go. But if I’m looking for info on non-tech stuff, there’s not really a site that I know of that has a bunch of general user submitted q&a. There’s quora, but that’s absolutely horrible.

Also even with stack exchange, the rules are a bit more strict there, low effort posts are uncommon which can mean you can’t find some stuff there. Although usually there’s some other forum you can find your answer on.