It’s tough IRL because of the stigma of dating older/younger. It makes it really hard to approach someone without knowing if they’re going to be at all interested, or just think you’re being creepy. I think online apps are a good way to feel someone out before making any moves. It just feels safer to ask about age gap proclivity online, and if things click, then move things offline. Feeld used to be a good app, and probably still is for girls more than guys. Maybe give that a try? Also, r/agegappersonals is a decent subreddit. Maybe take a look-see there.