who won?

You can still make fun of him OUTSIDE of the White House. He's a megalomaniac and will not go quietly. He will make a spectacle of himself even if he leaves office, so your entertainment won't be too badly hampered. There are about five or six states with tight margins and they need to count all valid ballots and get accurate counts. I think one candidate will likely be the presumed winner by Saturday (I hope). However, remember that the vote still has to be certified AND the electors must meet to cast their ballots. Only then will the election truly be over.

Nobody really knows. It seems like there has been quite some fraud.

It is often considered that when one part commits fraud, that means they would have lost without that fraud. But that's not necessarily true. Fraud doesn't mean Trump would have won.

Fraud often happens when there's a close tie and one part want to make sure they get the elections. It's a way to minimize the risk of losing. Once you introduce fraud, though, you lose track of what the true results would have been. Right now, both Republicans or Democrats know that the real outcome would have been close, but neither of them can know who would have won without fraud.

Trump won but the Dems are trying to cheat