The thing is it's Russia which is outnumbered here.
Russia today is not a zerg army, but that of a lot of unwieldy, and expensive wunderwaffe hardware no conscript can use. Basically, they have very, very few officers who know their shit.
From telegram groups of people supplying Ukrainian frontline:
- Intercept: unit A - got 150 satellite guided rounds, but has no programmer for them
- Unit B - was supposed to laser paint targets for helis, but their target painter didn't work
- They change encrypted radio keys, but no officer in the field has the key programmer, so they switched back to HF walkietalkies.
- Equipment dying to bad fuel, or multi-fuel engines failing to work on gas because no engineer knows how to switch them
- T80 units got smart frag shells long past storage date, half of them fail to detonate
- Their fleet tried to fire ASMs on land targets, and simply forgetting that it has no satellites there to relay guidance
And of course, as Russia is losing the few of its very valuable, and irreplaceable high value units, Ukraine will only be getting stronger PGM-wise, and with ranged fire.
Russians basically used up their trump card for nothing bombing cities, and killing territorials, while regular force, and high value Ukrainian units will now outnumber Russians even without reservists, and territorials.
Russia was a protos player, thinking it was a zerg, and using all of the high value stuff as a cannon fodder.