I don't see Ukraine willing to give away any more of its land. Russia wants to control the country, but as we've seen, they would never be able to take the whole thing by force. They have to come take out bites every so often.

Zelenskyy knows full well that he could get them to back off by giving up a large percentage of his territory, but he also knows that if he does, there's not much to stop Russia from coming back for more later. This is why he's pushed for his country to be whole again.