No, they weren't. Read up on Katyn - soviets executing 22000 Poles in 1940. A year and a half before nazis invaded the soviets. It is a war crime that Russia admitted in 1990. And it is one of many, too many to count. Not that it would convince someone like you.

No. Many nazis committed suicide at the end of the war, some were put to trial, but most suffered from amnesia for the years between 1933 and 1945 and were used to rebuild the Germanies.

Ideologically, the Soviets waged a class war and aimed for world revolution in the name of "scientific marxism". They prosecuted the upper and middle class, nationalists, religious groups, the cultural and academic elite of all non-russian groups, and everybody politically aligned to any political group except Stalinism.

Of course – Stalinism and Nazism being pretty similar, to Stalin-era Soviets as to modern Rashism, the word "nazi" does not mean "a follower of National Socialist ideology", but "everybody I view as enemy". If you accept their definition, everybody they persecuted was a nazi, of course.

The soviets regilarly executed civilians, "intelligentsia", officers and sent civilians over to die in Siberia.

Yes, the soviets were just as bad as nazis to the countries they occupied.

You not knowing history or how people were treated under the occupation of the soviets isn't my problem.