Here's the no-win proposition for Donald Trump. The entirety of Washington D.C. is obsessed with the idea that you colluded with the Russians to steal the election, even though you know you didn't - and no one else did either - and everyone familiar with the facts of the matter knows this. So you're having to deal on a continual basis with questions about a matter that consists of absolutely nothing. You're trying to govern, and the Beltway is collectively trying to keep you from doing so by tying you down with this nonsense.
But they control the news cycles and the narratives, so you if actually say how fed up you are with it, they'll turn it around on you and claim that they're getting under your skin, and that you're acting like a man who has something to hide. In fact, you're just tired of the idiocy of the Beltway and the media, but they'll make it look like your frustration reflects badly on you and not on them.