but when before the election he said: "only way we lose is due to fraud" my view of him changed. You can basically kiss your Republic goodbye at that point when a sitting president says before the election that he isn't going to believe the results, thats some third world stuff right there. Is there any precedent for this kind of behaviour in the US history?
That's pretty much what the Dems and never-Trumpers ran with when Hillary lost back in 2016.
In fact they went with it even before she lost. During the second presidential debate Hillary started talking about it dropping "Russia", "Putin", "17 intelligence agencies", etc...
And they kept on running with it, even today. Though investigations came back negative, Committees didn't produce anything remotely conclusive.
It is not giving Trump a pass, nor justifying anything.
Factually, what happened is basically the Dems projecting.
None of the things they accused Trump of doing happened by Trump's actions. On the other hand most of the things the claimed would happen under Trump and threatened Trump would do, either happened or were actively perpetrated by the Dems.
They literally did the things they accused Trump of doing. And the rest was simply made up.
Sure, having a candidate saying he/she won't trust the results until they are all fully counted is concerning. But that's what actually happened back in 2016, with a significant number of Democrat Senators refusing to certify the electoral votes of their states.
Since 2016 the craziest political conspiracy theories got pushed, and they were pushed by Democrats politicians, pundits and activists.
Things that were much more crazier than the 9/11 conspiracies (jet fuel/fire can't melt steel beams, and such).
And they got embraced wholeheartedly, even by people on this thread. Telmar for instance.
"Is it true? I don't know but I don't like the guy, so I believe it likely happened."
"Are there proof it happened? Someone said they heard someone say to someone else, someone told them they heard something somewhere (which basically was one of the predicament for Trump's first impeachment by the way). But I don't like the guy, so it is totally plausible."
"Did it happen? I don't like the guy, so yeah it happened."
"Did he really say that? Don't know, people told me he said it, I didn't check. But I don't like the guy, so he said it."