You're wrong on two key points:

1. USSR and Nazi Germany only made a nonaggression act after other Western countries did because Western powers purposefully did not invite the USSR. It was a way to try to protect Czechslovakia and Poland since the Westerns were simply giving up Central Europe to the Nazis. You can read more about it here.

2. The famine in the USSR was not a genocide. That is Nazi propaganda. Read about it here.