As far as I have followed, Ukraine has lost a lot of the Soviet equipment.
These have now been replaced by Western technologies. In a bit smaller number of pieces. But the quality is much better.
In the German media it is also reported that Ukraine keeps large mechanized brigades (or was it pattalions?) in reserve.
At the moment, they are probably just trying to open a gap somewhere and tie up the enemy in as many sections as possible. And of course, as always, to attack the supplies.