Perhaps the destruction of the long awaited Donbass cauldron will change peoples' minds? I keep getting Stalingrad vibes where the overwhelming German narrative believed the Red Army was finished. Then the jaws closed and the rest is history. The Russians have been pulling their punches since day 1 and I think we're soon about to see a taste of what they have been holding back for NATO via demonstration in Donbass.
At this point I'm not sure Russia has the will to do that. Despite announcing the end of "stage one" , there doesn't seem to be any doctrinal change other than redeploying ground forces.
Russians here have been giving excuses for their poor performance. While some points may be true, it doesn't hide the fact that the Russian military is no longer feared any more. I think this is because of poor strategic decisions rather than the competency of the Russian military, but again, it doesn't matter.
Once that has gone the only credible threat that Russia has is the nuclear deterrence. Even that is currently being eroded a bit at a time with all these provocations. Unlike America, Russia have never used nuclear weapons in anger. If the Russians let Ukraine survive I'd question their will to use those as well. This is a war for Russia's existence. The sooner Putin believes that instead of just saying it, the sooner the war is over.
In my opinion the only way out of this is to restore credibility in Russia's military. I'd let NATO rearm Ukraine as much as they want (excluding air force). Then launch one of the most brutal offensives against Ukraine seen since WW2. Hit them with artillery, aerial strikes, completely overwhelm them. Hit any fleeing Ukrainian soldiers, there can be no survivors.
Then I wouldn't advance, I'd let them rearm, form a new line and do the same again. Keep doing that until there is no human left in Ukraine willing to resist. Then advance all the way to the Polish border, set up the denazification camps to put the population through and put the surviving war criminals on trial. Any Nazis fleeing to the west will have to spent their rest of their lives fearing a KGB attack.
Unfortunately hundreds of thousands will have to die. If Putin had fought properly from the start it would only have to be tens of thousands, but there's no changing that.