I don't think he's an idiot...he's just not a politician like the other 99.999% are and probably isn't or hasn't been aware of how the big "political machines" tend to truly operate. I think he's some guy that went to sleep one night and woke up the next day and thought..."hey, I think I'm going to run for president". I don't even think he likes the job but was completely shocked that he made it as far as he did...but I also don't think he's a quitter either. That's why he is the way he is...he's not from the "establishment" and he's beholden to no one and really has nothing to lose so he says whatever the hell he wants to say and when he wants to say it. As for the people he chose to surround himself with...I don't have an answer for that. Those that have been indicted so far are not indicted for colluding with the Russians though. As I've previously stated, I think if there is evidence of collusion, it would have been found by now and would have been released to the public because I don't think any normal American would want someone in office...republican or democrat...that has been on the side of the Russians to the extent that he is accused of and holding the office/position that he holds in our land. He would've been gone by now.
He never intended to win. Hell he didn't even write an acceptance speech. This was all about making money from campaigning. Winning brings scrutiny and, lets face it, he's a crook. Whether or not he'll be punished is the question. Regarding your collusion/no collusion comment, the investigation is still underway. That the public isn't privy to the facts, yet, means very little.