If you think about it, Ukraine really hasn't captured anything in a real fight.  Yes, they re-occupied areas that the Russians didn't want any more or where just decoys strategically, and of course the Ukroids/Western sponsors made a big deal about it in their pathetic sort of low-grade propaganda way, but I cannot think of anything of significance that they flat out won in Bakmud-style hard combat.

Latest word is that Ukraine themselves are evacuating Kherson after figuring out the hard way which was pretty obvious to every thinking person; It's a loser at this point in time and will be as long as Russia can easily destroy anything which moves on the West Bank and will likely do so for quite some time.  And, of course, if anyone destroys the dam the whole place is wiped clean as though by the wrath of God.

One reason Ukraine might be abandoning Kherson City is that they might be going to have another go at the dam in order to fuck with the water supply to Crimea, but it would be very NaZiocon to keep the population in place at gunpoint just because it's the kind of thing they do.  The Russians certainly knew that which is why the resettled the decent elements of the population before pulling out.