People like Trump and Elon think a deal can be done with Putin or he can be placated, or there's some sort of solution like you're waiting to hear, but all attempts to even begin negotiation fail because Putin is dead set on rebuilding the Empire. Apparently in any discussion about his war he spends hours talking about Russia's historical claims and ownership and shows old documents and books etc.
I'm sorry it seems to you like no one has come up with a good solution but it's either give Russia one or more countries (and then he'll want more...) or defend until he loses power or dies.
irredentism is a hell of a drug. Putin is fully locked in.