It also drives him up the wall that his predecessor, Barack Obama was well respected by other world leaders. Trump knows that when he goes on these trips, all the other leaders might be politely paying attention to him, but everybody in the room is thinking he's a abject moron. No world leader (besides his BFF's Putin, Erdogan, and Kim) will ever view him with anything other than disdain.
I doubt that you will understand this.
People like Santa Claus -
Barack Hussein was Santa to these countries that liked him - by giving US Money to them ( in Iran's case a lot of money and a pathway to Nuclear Weapons).
Trump is - Wait till your father gets home.
These other countries don't like a strong Pro America presence in the White House.
It also helped that Barack disliked the US as much as they did.