Another thing about RuAF. On paper its very big - over 1100 combat jets and bombers. But during this war in February and March they made only about 200 combat sorties a day in average. Then it reduced even further.RuAF lacks targeting pods and JDAMs. So they can either strafe in WW2 style with unguided rockets (which is extremely dangerous if enemy has MANPADS) or level towns with dumb bombs (also dangerous if enemy has some simple SAMs).
They have long range cruise missiles. But they are very expensive and not suited for CAS.
For comparison Israeli air force with about 350 jets made 400 combat sorties a day during 2006 Lebanon war (which was a LIC conflict). While during Yom Kippur war IAF made 590 combat sorties a day.
That shows very low combat readiness and poor ground service quality of RuAF. Plus unlike Western and even Arab countries (after 1967) virtually all RuAF aircraft stand in open and not in protected hangars. So they can be easily destroyed.
Typical RuAF airbase: