Russia hasn’t gained any ground in over a year. They have lost their airpower. The Black Sea Fleet is heavily damaged and a good chunk has been sunk. On top of that, they have lost 5,618 tanks, 10,482 Amored vehicles, 8,045 artillery systems, 919 MLRS, 605 Anti-air systems, 324 airplanes, and another 324 Helicopters, 6,116 UAVs, 1,571 cruse missiles destroyed, 22 ships, 1 submarine, 10,561 vehicles, 1156 special equipment systems, and 336,230 personnel.
Ukraine isn’t losing right now, not by a long shot.