How exactly do you picture it ending? No, really. Imagine you got everything you wanted. Everyone delivers max offensive capability to Ukraine. Ukraine brings the war to Russia in full scale. Putin, or his successors, give up. Then what?
At the end of the day, Russia will still be there, at Ukraine's borders. What happens?
(Unless you're one of those who imagine a split-up - a sentiment Putin absolutely has noticed and used in building domestic support, by the way. But either way, there will be something that used to be Russia at Ukraine's borders, and they may not be very happy about their neighbors after a full scale war.)
I'll listen to any plausible scenario - plausible to you I mean, I'll defer judgment for now. Don't worry about convincing me, just convince yourself. I just want to know what happy outcome you imagine after Ukraine has somehow brought the war to Russia and won.