i usually look for some kind of motif and go off of that. and the "motif" thing is really broad, sometimes it's an important event, sometimes it's the stylistic choices, sometimes it's about the thematic content of the story, for example sometimes i like naming things something un-intuitive and that feels like it has nothing to do with the story because in reality it's not about the plot or the literal events but rather the themes.

another thing i like doing is taking stylistic cues from whatever i'm working on and using the titling conventions of other media. for example i've been loosely working on a project that takes inspiration from super old internet animation, think newgrounds and that whole early internet culture of memes for 12 year olds, so i titled it the way a young kid would title their youtube video in 2011 that's like, a PMV they made in movie maker with stolen fanart (with XD and everything). but really this can be applied to many other formats, title your story like how one would title an official work document, an email, a blog post, a scientific species name, really anything! the more creative you get with this approach the more fun it is.

generally speaking i like for my titles to have something going for them, like either it means something more after you read the story, sometimes it's just a little comedic thing. also i'm a big fan of sentence titles, like the title is a medium-long sentence. i think those types of titles can be fun, and you can take them in either direction: something funny, or something mildly concerning, or something downright menacing.