Israel killing civilians at random probably isn't going to help bring the average Palestinian to their side against Hamas. If they were being nice to the civilians they might actually be willing to help you.
He was given a trolley problem. Well, it was more of a train problem. Well, I don't remember where the bottle neck was. But the guy couldn't get the Jews fast enough to satisfy his evil ambition.
Well they would have probably assassinated fewer SS offices. Also some people did collaborate with them. Also, Hitler would probably not be viewed as negatively as he is if they didn't do all those things.
They did. Others were pretty hostile towards people for doing so. I expect people would have been even more willing to collaborate and less hostile to those that did if they, well, weren't nazis.