I would think a negotiated settlement along those lines would require a few things - first, would be economic - providing the resources for Ukraine to rebuild from the destruction - those costs should be borne by Russia - not the US, not Ukraine, and not Europe. Now, Russia may not have a lot of money, but they have natural resources to barter with.
The second non-negotiable from Ukraine should be NATO membership. That provides a better security agreement than was forced on Ukraine when she gave up nuclear weapons and military assets in exchange for "security" at the break of the Soviet Union. That agreement clearly did not work.
With respect, it is sheer fantasy to expect Russia to either pay for war reparations or agree to NATO membership for Ukraine. The West has no leverage to force that without boots on the ground.
So if those are the terms, Russia will simply keep fighting the war.
And if the war continues, it has been strongly signaled that U.S. support will completely dry up. Zelensky has said flat out that Ukraine cannot win without US.
So then the Ukrainian people are at escalating risk to lose everything.
Everything.
We can wish all we want for turning back the clock, but that is the reality of the here and now