I've noticed this for awhile with trump. he has like two people inside him. Trump and Dark Donald. (like YuGiOh!) regular Trump is the guy that ran the billion dollar companies and can act like a regular politican well, he is what you expect from an old white man, a Jeb type. but then when its time to Debate or when he's stressed Dark Donald comes out but instead of an Egyptian pharoh its a black teenager. and Dark Donald talks shit and claps back and is quick with a joke he says crazy shit and is talking shit on twitter at 3AM.
You could notice it in his speaking style sometimes, especially during quarantine. with no one there to feed his ego like when he's on tour he starts talking to himself. if you look at old speeches on the epidemic you can see it looks like a conversation between two people. "The pandemic is bad everywhere"
"Look at china"
"Look at China"
"China is a mess"
"i'd say compared to china you know....."
"China is shit, the US dind nuffin, perfect response"
"the response was something"
"If i were to grade it i'd give myself an A+"
"(stunned silence)"
Thats probably why he's doing so terribly here, Dark Donald wants to go full gangster and kill everyone but Trump knows how bad that would look so he's trying to be a politician instead, and unlike the other times he can't trick people with some dumb third option.