https://tvtropes.org/pmwiki/pmwiki.php/Main/AdultsAreUseless
I don’t know if this is quite the correct trope, but it’s close, at least. It’s common in any kid/teen story that the adults are complete screw-ups, and it’s up to the brave child heroes to do anything about it. I always think of it as the Goonies plot (my first obvious exposure to the trope) but I’m sure it goes back way further than that.