Let's not buy into the press. I don't think he is half as crazy as people make out, and he's not going to be nuking anyone. He's taking a firm stance to try impress his voters. I think that's where it ends.
He's arrogant and clearly a douchebag, but Clinton was already picking a fight with Russia before she was elected - do the research and you'll see that. I'd say that's more dangerous because right now, picking a fight with the second biggest holder of nuclear weapons is a worse than trying to make friends with them, which is what Trump has actually done.
As far as worse than the rest put together, I suggest you have a look at some of the presidents of the US, Bush for example, who waged an unsanctioned illegal war against Iraq and created ISIS, resulting in the death of hundreds of thousands of people. My guess is bush is probably responsible for the deaths of upwards of 500,000, well over a million if you count the damage that ISIS has done, which is ultimately the creation of Bush and his war. So yes, complain all you want, but until he has waged a war with another country and killed over half a million people, I still think he's better than some recent US presidents who seem to have got away with murder.
The person he fired would have been fired 2 days later when he elected the replacement. She was from the opposition party, so that was no surprise but that doesn't make good press. It's like Turnbull firing a Labour MP who was going to be replaced in 2 days anyway.
As for the refugees, of course he's unhappy. Obama used an executive order knowing full well Trump wouldn't like it. How many refugees did Obama take in during the time he was in power? Do the research and you'll find out it's very low, so it was a simply case of political sabotage, there was nothing noble about Obama's deal and Turnbull is a moron for believing it would be done without problems.
I could go on.
As I said, I am not supporting trump, I think both Trump and Clinton are terrible, but I also think Clinton is being painted in a way that is not fitting. She was terrible and the voters knew it. I also think you need to put the blame squarely on the voters, not trump. He is doing exactly what he promised to do, and as the democratically voted president, that is his right or his obligation. If you promise to turn water into wine and people vote you in on that promise, then I would say you have an obligation to deliver on that. If Hanson won in Australia, is it her fault or the voters who lifted her to the top?
In the USA, it's the failure of the voters to turn out that created this problem. If half the voters who are rioting now turned out to vote, Clinton would probably have won. And as I said before, the more they throw tantrums and riot, the more they swing the vote to trump and give him more control.