I didn't see what you saw, but Trump sure looks tired. Anyone would be, I have no idea how they keep the pace they do. Oldest President-elect in history.
My first executive order as President of the United States would be to ban camera shutters at my press conferences.
 - https://www.youtube.com/watch?v=dWs4RzoPP6M
I assure you the President is also tired and stressed, and probably feeling pretty defeated right now. He's putting on a public face despite that, and he's doing a much better job of it than his successor.
Give it time, though. In a few weeks the President-elect will be back to his confident self.
He literally cannot restart his shpiel until the markets stabilize. To me, his suppression looks contrived.