I run across this problem all the time
one possibility that I've employed in the past is gratuitous worldbuilding and development of characters and hoping that a story will spring from that, if that makes sense? like the ideal plot is driven both by the world the characters live in and the character's personalities and the choices they're inclined to make. so logically, the more I know about both, the more likely I am to find a story worth telling about them. At the end of the day, even if I don't find a story that way, I do end up with a lot more backstory and paraphernalia for when a story does come, so it's a win either way.
and, of course, there's the age old "figure out what genre your story is and a plot will probably emerge from that because there's only so many original basic plot structures" but that can feel a bit… soulless, at least to me. But it does help in the sense that you then know where to look for the problem that the plot centres around. so like… a murder mystery will have a murder. an epic adventure quest might have a macguffin to find or an evil empire to topple. a subversive anti-establishmentarian spy thriller will probably have massive sprawling systems rife with corruption and people who hate that. a character-driven coming-of-age story will have relationship drama and personal growth issues. and so on. then, once you've established the basic elements that would create a story of that genre, you can go about finding them in your world and then crafting a story out of that, if that makes sense.