The murder rate is a lot lower than in Mexico, and on par with the United States, so violence doesn't even begin to explain it.
There's just something about Russians (not Slavs, because many Eastern Europeans are doing fine) that makes them prone to self-destructive behaviour. It was the same way even in the 19th century. Even the most prominent intellectuals and music composers, were gambling addicts or heavy drinkers.
The internet is full of Russians doing the craziest things imaginable, not for an audience, not for fame or money, but just for the hell of it. A lot of them just have no regard for their own well-being. And I reckon that none of it is done while sober.
I think the state needs to start controlling alcohol consumption like in Finland, and push back culturally on drinking. Putting limits to alcohol use, had a big effect on the decrease of alcohol consumption here. Finns were some of the biggest abusers of alcohol only a decade or so ago, today they are within the norms.