If everybody knows about, then everybody would speak about it. Even Trump, who has every reason to attack him. But all you have are screenshots of iMessage chats everyone can fake from meme websites.

Now ask yourself the question, if that all was true, then Biden's presidency would end immediately. But not Trump or anyone in his inner circle and not a single large Conservative pundit (Shapiro, Crowder and so on) is talking about. Why are they protecting Biden if all what you said is true?