if Ukraine holds and Russia withdraws eventually, the US and the west win. BIg. For relatively little money (when you look at our military budget that goes to mitigating Russian threat, funding Ukraine has been chump change) we have depleted Russia's stores, depleted their will to fight, created unrest in Russia, Putin's kick ass strongman bullshit reputation has been tattered, and they have been so busy with that, they have not been fucking around as much in other places. So, big win for the west for cheap. even if Ukraine finally 'loses' the west wins.
For the Ukrainians, they get to keep their country. They aren't Crimea. In their neighborhood they are badasses and held off the red hoard. Win for them too. If they finally get full Nato status, they have access to shit tons of western monies and will be set. Zelensky will be a national hero and folks will dig that. Lots of win there.
The russians pretty much lose in this thing no matter what. If there is win for them it is in further fracturing US internal support for Ukraine. We have typically propped up shitty regimes in previous wars, so, Ukraine being corrupt is a nonstarter, and no big deal.
The nuclear arsenal is the thing we should go after next. We need to keep the pressure on until Putin is gone and find a way to diminish their arsenal so they are just one of many countries striving to improve and not run, the world.
Then we can tackle the chinese and help them implode. That is the only way (and historically the way) that they always fall. We can help them while bolstering our own economy. As Japan withers and ages out, we can help China implode.