I mean I’m somewhat interested in how the Wizarding world manages to keep hidden despite all the kids from the muggleworld supposedly having friends and connections and things before Hogwarts.

I imagine the kindest answer to that involves magical law enforcement obliviating and confounding any witnesses, akin to how Gilderoy Lockhart had a career but perpetrated at scale on a large populous of second-class citizens (aka Muggles). Which is horrifying, but any other answer I can think of is somehow worse than wizard cops mind raping anyone who saw anything.