Yes because they cannot win on the battlefield and have lost an enormous amount of lives. Just because Russia is adversary to the US does not mean we should send 100,000’s of young people to the grave. (Meanwhile safe over in the states we wave Ukrainian flags and call them heroes as we leave them dead or mangled)

So yes reaching a compromise even if Russia was the aggressor is in the best interest of the people left in Ukraine.

Would you rather use our weaponry and intelligence and money to prolong this war for 10 years … just to have the same outcome but 20x the number of casualties?

Yes. That's literally how peace negotiations work. The alternative, winning the war, precludes the necessity of peace negotiations. All negotiations in the history of negotiations are negotiations between aggressor and agressee.

For the sake of peace, yes, I think they should be willing to make concessions. That's how negotiations work.

If you refuse to offer anything you aren't really negotiating. You're just issuing demands with no exchange.