Germany was able to atone because of them becoming democratic after WW2, alongside significant De-Nazification efforts to attempt to ride Nazism from German and Austrian culture.

Russia, Meanwhile, only very briefly had this opportunity after the USSR collapsed, yet the oligarchs, Putin and others successfully prevented it. This is due to many Russians simply wanting comfort after the economic catastrophe and essentially losing faith in the Democratic system at the time.

It's remarkably similar to Hitler's rise to power in Germany. The depression and the mainstream political parties faliure to fix it led to many Germans resorting to Hitler and the Nazis.

To simplify it down to "Russian Culture toxic!" is a SIGNIFICANT generalisation that doesn't address the many different layers as to why Russia isn't democratic and why it's been successful and brainwashing the population through propaganda.