Trump stinks, however compared to Kamala he is a breath of fresh air.

Why? Because he's the perfect cult leader and far too many people are unconsciously longing for a cult to give them direction and purpose.

I think what you are talking about basically is he is a tad psyco and I agree. All the traits you describe are due to one underlying cause, which is a lack of empathy.
He is intelligent enough but what he lacks is emotional intelligence. Think of these types as pure logic, like a computer. He assumes logical response in people but people are not like that, they act/ respond emotionally more often than not. No empathy means you concentrate only on self, on how it affects you, in your decision making. Not good leadership material for sure. But do not make the mistake of thinking Trump is the only one who suffers from this. Politics is rife with them eg do the same analysis on Pelosi and Hillary Clinton and I'm betting you will reach the same conclusion. Even Biden. I worry about Kamala. So do some more analysis on these people and you will reach the same conclusion, that is if you do an honest analysis and don't suffer from TDS.
A lack of empathy does not make you evil necessarily. It just means you are totally unaware how your actions effect others emotionally whilst you seek your own happiness, ie Trump's past liaisons with other women, how that would affect his wife and family would not even have crossed his mind. They just don't think like that. But if explained to him logically not emotionally, he will get it. The way to stop this behaviour is to explain to him that people will think less of him ie use his vanity against him. Then he may (not a given, psycho's are unpredictable and have no emotional ties to memory) change his behaviour, not for his family but for his own reputation. They manipulate people to serve their own interests but once you understand their flaw, a lack of empathy, you can play them as well. That son of law of his, Jarod Kushner is a worry, another psycho, and hopefully does not have Trumps ear as much next time.

The thing with a potus, they are not so much a leader as a manager. In this Trump does have some skill. So as long as he surrounds himself with people who do have emotional intelligence and explain to him logically how people will react to whatever brain fart he comes up with, he will listen as long as it advantages him personally. That is what is needed and I think a second term he will do that. His first term, a big mistake surrounding himself with people like Pence and Pompeo, others who lack emotional intelligence. But this time he is gathering people like Gabbard and Kennedy to advise which are far better choices, His first term he had zero experience in politics. He has 8 years under his belt now. It will be a different Trump presidency.

The US Constitution is a well written document and takes into account these type of personalities who may gain the highest office in the land. There are many checks and balances to limit their power. Until the Patriot Act was introduced, giving the potus, a single person, far too much power. The Democratic party voted to continue this Act when Trump was in power so figure that one out ie Someone soooo dangerous they voted so he could keep that power. The worse parts of that Act? Creating a security state and giving the potus the power to wage war without Congressional approval. Yemen the current case in point ie The US is at war with Yemen with no Congressional approval. This Patriot Act is the primary reason the USA is where it is imo. Get rid of it is my advice.

Psycho's running things is a problem in all our societies. The thing with Trump is he is a Washington outsider, rich and in the eyes of our materialistic societies, has already climbed to the top of the shit heap. So what is left for him? His legacy to feed his vanity. These people love historic figures and get woodies with the idea their name will live on. He does want the best for America but for purely for selfish reasons, his legacy. So lets hope if he gets in, which I think is a given as Kamala is Kamala, he surrounds himself with good advisors with plenty of emotional intelligence this time, which I think he is doing. I think he will cut a lot of waste from bloated government and withdraw from o/s conflicts. He will still use the military, but it will be in America's own hemisphere. Venezuela first on the list.

But don't fool yourself that politics have never seen his type of personality/ flaws before. There are plenty of examples. For sure not ideal, but it won't be as bad as everyone thinks.

Apparently many GOPers are not sane, or moral, or patriotic, at least not in the traditional sense of the definition.