Every?:) Rephrasing your statement why Ukraine didn’t win the war yet? What do you think happens to the Ukrainian HQs and depots all the way to the Polish border? How do you think Ukrainians suffered 15 times the number of Russian losses?
If you are arguing about the technology invest some effort to familiarize yourself with the subject.
LOL, war would be over in two weeks if russia established air superiority, and then destroyed command and control, interdicting all supplies, but for some unfathomable reason russia is retreating(sorry strategically withdrawing) after 10 months of invasion.