Sure. Just give Russia what they want, take a pause for a couple years, then let them take over the rest of the country.His appeasement bought time for the war effort to be mobilized. The US was laughably underprepared. Either way that was 80 years ago.
The current war is not winnable by Ukraine. They aren’t gonna push Russia out. Nobody is coming to the rescue. So you have the current situation: death, destruction and tons of our money being wasted. Negotiate out before this escalates into something scary big.
The war absolutely is winnable by Ukraine provided they have the weapons. Every dollar spent by the US has been worth it.