That's right, and imagine Putin giving up land - it's not going to happen. If Ukraine wants any of their own land back, they have to hold on to the Russian land.
Personally I think for the sake of survival they should consider giving up on the land they've lost but join NATO and have our nukes stationed there for their protection from further attacks.
From what I understand, that is actually a reasonably strong prevailing opinion in Ukraine. They're not keen on relinquishing their claim on any part of their land, but they would consider leaving it under Russian control in a peace deal, and what's not at all optional is some form of security guarantee that meaningfully deters Russia from trying again (but than NATO hasn't actually offered, and it seems like they think they can leave that question until after peace has happened, which conflicts with Ukraine's view that it's a 100% prerequisite for peace).