I’m going to generalize massively, because it feels like it’s way too complex and multifaceted an issue to detail fully outside of a dissertation.
Russians, in my experience, generally aren't engaged in politics in the same way as westerners are. There is no real democratic tradition in Russia, and unfortunately when Russia did experience the Yeltsin version of ‘democracy’, which was unbridled gangster capitalism, it was a shit show. This turned a lot of people off, and solidified that the ‘old ways’ (governance by an autocratic strongman that through force of will and brutality held together a huge, disparate country) were better.
For the older generations that lived through the chaos of the 90s there’s definitely a sense that Putin kept the wolves at bay, and restored order. He oversaw a period of growth for Russia, which saw an emergence of a fledgling middle class and a return of a national pride. That’s what his support base associates him with, and where the support comes from. They don’t see the monster the west sees. Human rights abuses? Well, generally information about those are quashed, but again, look at Russian history for the rest of the answer. It’s not like the concept of human rights has ever been particularly relevant to Russians. Lip service has been paid, but the reality has been quite different.
There’s a stereotype that Russians are fatalistic, and it’s a stereotype because there’s more than a grain of truth to it. There’s a resignation to events, because politics haven’t been informed by the Russian people, politics have been imposed upon them.
In terms of change, revolution, there is a difference between change coming about as a result of internal pressures, and change that comes about as a result of external ones. Russians already have the sense that they’re hated by the west, and this has been promoted hugely by Putin’s propagandists. A considerable amount won’t see sanctions as Putin’s fault, but an expression of western hatred in response to Russia standing up for herself (remember, they’re bombarded with the narrative that it’s the Ukrainian government that is the aggressor). That’s likely to lead to a doubling down behind Putin, and not a rebellion against him.
I can understand fully frustration and anger towards Russians. I feel it myself. Anger, also. However, I also understand, and there’s a compassion that comes with that. I’m lucky, in a weird way. I’ve spent a lot of time there, but I wasn’t born in Russia. My mother is Yugoslav and I was born in what was then Yugoslavia. I lived through the wars there and I’ve seen how countries emerged from that (not perfectly, but in a way that was arguably better and more open to the west, if not fully embracing of the west), and I’ve also lived (live) in western countries, so I have a different perspective to someone that’s only experienced Russia. My viewpoint is shaped by my experiences, and undoubtedly it would be very different if I was a Russian that grew up there.
It’s the oligarchs that will be a threat to Putin because he’s hurting their bottom line. He knows this too. I’m not particularly hopeful as to what will come after him based on any action by the oligarchs.
There is hope when it comes to the younger generation, who have grown up with the internet. That have meaningful access to different ideas, and streams of information coming in. I don’t bank on it, but I hope.