So child sacrifice and cannibalism are only technically "in the Epstein files;" there's very little evidence that anyone did those things. For other readers, if you hadn't heard about this, that's probably why.
If there is no evidence of a crime, you cannot prosecute someone in a constitutional democracy.
If you could you could just make up any claims and get rid of people you simply despise.
Which happens in various regimes...
So although it's certainly a possibility that such cases happened, as long as there is no evidence that they happened, they didn't for all legal matters.