I agree. When he was recovering from covid - he wanted to leave the hospital and do a reveal to show he was wearing a Superman shirt underneath. And when took his reality tv-like triumphant return to the White House via Marine One - I'm not exaggerating when I say I thought he might have a stress-related health problem right then outside the White House. He looked sickly and struggling to breathe. But he was in denial and the hogs loved it. Their hero returned.
When he nearly got assassinated - his raised fist was an insane display of courage. And then - all things considered - he had fairly dignified exit from the stage to his armor-protected vehicle. It was in no way like the movies where the Secret Service agents are pushing the president along because every second counts. And in another un-movie detail - I think he even managed another raised fist before they finally managed to get him in the car. It's impossible to know what he was thinking in the aftermath but I think it was possible his massive adrenaline rush made him forget that actual reality is not like reality tv. When you die in reality - that's it. You're actually dead.
And then when he turned on his tv - even in his right-wing media bubble he must have felt awful when it was clear a huge number of people didn't care very much about him or they were lamenting the fact he didn't die. After the shooting - I'm unaware of any grandstanding and boasting Trump did about it. And I assume not only has he been ruminating that he nearly died - he's probably also thinking you can only avoid the Grim Reaper only so many times and at 78 - he's not going to live forever.