Ukraine calls it a counter offensive.
The only reason you counter is to take back what you don’t have.
The counter-offensive is a strategic response initially done by the defending force engaging the aggressors force to disrupt their offensive operations and to regain control.
Clausewitz considered the counter-offensive as the most efficient means of forcing the attacker to abandon offensive plans.
https://en.wikipedia.org/wiki/Counter-offensive#cite_ref-1
“Ukraine calls it a counter offensive.
The only reason you counter is to take back what you don’t have.”
Did you intend for your remark to be clever?
Today Russia controls about 14% of Ukraine’s 2013 territory, that’s down from around 27% in March 2022.
So Ukraine’s counter offensive has so far taken back about half of what Russians had taken by last year.
What exactly is your problem with that?