So I’d say that’s what you’re not understanding, though I’m puzzled as to how you could have missed it if you spent any time looking into it at all, since every reputable source has reported the rebuttals right alongside the allegations.
There is no question in this election. The margins are not close. They are not surprising. They were not even terribly unexpected. The only party alleging any of those things is the party that has repeatedly eschewed facts for 4 years and longer. The one that has repeatedly pushed useless investigations that they themselves conclude are baseless. And in fact it’s not even the whole party, it’s mostly the parts of the party working directly for the loser.
Does that help clarify your confusion?