1. When he dismissed Russian interference in the election
The spectre of Russia has haunted Trump since the 2016 election that brought him to power. Post-election analysis of data by the likes of academics seems to suggest that yes, Russian interference played a part in it.

But Trump, funnily enough, has never been keen to examine the role Russia might have had in seeing him elected. This means he’s not only blocked every attempt to investigate it but also sacked multiple officials who’ve threatened to do so, like former FBI director James Comey. Trump even admitted that Russia was part of his reasoning for firing Comey, making him only the second American president to sack his FBI director. Historic.

Ah, the sweet smell of nepotism. As soon as Trump went to the White House, so did his family. But breaking with protocol, members of the extended Trump clan quickly received important high-ranking roles. Like daughter Ivanka and her husband Jared who are now special advisors, a role that is very vague but ensures they’re essentially part of running the country. Ivanka’s attempt to mingle with world leaders at the 2019 G20 summit was widely ridiculed.

It’s not stopped her, or the other Trumps, from ascending the power ladder though.

You have to do something pretty bad to be impeached. Like have sexual relations with a much more junior member of staff and then lie about it. The accusation facing Donald Trump was that he pressured Ukraine to dig up dirt on Joe Biden and his son Hunter, threatening to withhold aid unless the Ukrainian president complied with his wishes.

Trump was acquitted by the Republican Senate majority but people can examine the evidence for themselves…

Unless by "experts" you mean the commenters on the Conservative blogs you follow, I doubt that. Most opinions I've read confirm that appeals are difficult and citing the political views of the DA aren't sufficient. Tish James brought a carefully documented case and witnesses to court. Trump had no defense. It was such an obvious case that the judge granted a default judgement. Even the notion that there were no victims isn't enough. First the law doesn't require the prosecution to find a victim, and second, the state's witness testified that banks lost out on hundreds of $million in interest Trump would've otherwise paid. And besides, it's fraud. Saying you can't charge because nobody was hurt is like saying people can drive drunk as long as they don't get into an accident. Trump will lose his appeal.

Anyway, I only searched the web for a while to see if I could find any "experts" who agreed with you, and had no luck. Got a link?