Well soviet civilian casualties were something like 17 million people on their own, and 11 million people were killed in concentration camps, so...

And remember, Stalin helped Hitler start WW2

You do realize that the USSR signed a pact after the British and French rebuffed them and had already signed appeasement pacts with Germany right? (Including allowing them to size czech territory, which gave Germany much needed personnel, industry, and a fleet of really good early war tanks) And after they invaded Poland they dedicated resources to moving minorities out of the way of a nazi invasion they knew would come?

It’s not like the USSR gets a pass like countries like France do.

France literally signed pacts with nazis and did even worse appeasement than the Soviets did.