>>519307180
>3 going on 4 years of utter victory

Zoom that map out a little bit anon, you can fit it all in one.

Actual answer, more military aid and more reliable aid, long range systems especially and AA. Ukraine withdrew from Avdiika after Western supplies were halted for a short period and their positions became untenable.
Russian advantages in manpower is hard to counter but if the much touted ratios are even half true (and I don't see why they couldn't be considered how retarded the Russians have been and the numerous dead zigger piles) then the weaponry Ukraine does have is doing a good job of negating it