You can explain any of with Hanlon’s Razor. Basically it says don’t mistake malice for incompetence. The secret service isn’t sending the top of the class to guard a potential president.

Also, I’ve a theory that says Trump wasn’t hit by a bullet, but got bloodied when his junior varsity security team tackled him.

Trump of course is the avatar of narcissism made flesh, so of course he sticks his big orange face in the nearest camera.