Well, you can't deny his admiration so you must have a problem with the aspiration. Just off the top of my head, he seemed to think he should have access to the Supreme Court.
"I’ve got the best Supreme Court advocates, lawyers, that want to argue the case, if it gets there. They said, ‘It’s very hard to get a case up there,’” Trump added. “Can you imagine,
Donald Trump, president of the United States, files a case, and I probably can’t get a case.”
He got his A-G to decree that a sitting President couldn't be indicted. And last November in an interview with Fox he said Barr might be in trouble if he didn't round up and prosecute political enemies.
"During a live phone-in on
Fox Business,
Donald Trump complained again that not enough of his political enemies have been arrested – and said attorney general
Bill Barr could find himself in “a sad situation” if he doesn’t start rounding them up."
"Unless Bill Barr indicts these people for crimes,” declared the president, “the greatest political crime in the history of our country, then we’re gonna get little satisfaction unless I win. Because I won’t forget it. But these people should be indicted, this was the greatest political crime in the history of our country. And that includes Obama, and that includes Biden; these are people that spied on my campaign, and we have everything."
You don't call that stuff aspiring to authoritarianism? Sure sounds to me like he wants direct power beyond his mandate. He wasn't able to pull it off because despite his best efforts the system works the way it was intended.