One thing that Ukraine is not doing is using Russian tactics. A lot of the successes they've had came with using western style C&C. Had Russia invaded for prope

One thing that Ukraine is not doing is using Russian tactics. A lot of the successes they've had came with using western style C&C. Had Russia invaded for proper in 2014 then yes, but Ukraine undertook an extensive restructure and rebuild since then, obviously limited by their capacity and external support. Well, you did talk more specifically about how they use tanks. Some of their army have had western training. If they are doing that there might be a more contextual reason that applies to Russia too - lack of air support. Western tactics rely a lot on good available air support and air suppression. Russia has more air support than Ukraine but it's still very limited.