He’s trolling dude, just like he said he was better than George Washington. There’s some kind of duality in US politics where people either take Trump seriously but not literally, or they take him literally and not seriously (the latter leading to all sorts of confusion, though often it’s intentional confusion).
Today Trump and his sidekick verbally attacked a man on TV, who has spent the last 3 years watching his country viciously and maliciously attacked by Russia. He's watched his people die. His friends killed. His country leveled.
And then Trump spews "give up" and "screw you", and the best part is he gets agitated and upset when the Ukraine didn't bend a knee.
This isn't trolling. This is the President causing real world events to happen. This is the President derailing a 3+ year effort by the entire West to stop Russia's aggression. This is a President appeasing a dictator, an expansionist, but apparently when he says and does things he's... trolling?
During election when Trump said outrageous things, a lot of people had the same attitude as you, and downplayed Trump's comments: he's trolling... he is bluffing... it is just a distraction tactic... it is a negotiation tactic... and so on.
Then after he got elected and actually started doing the things he said he would the same people are like... "Trump is delivering exactly what he promised what he would deliver when he started this campaign. This is what the American people voted for!"
This is no ordinary old man though. Look at how many times he has mentioned third term as President.