One can not discuss the present situation in Ukraine, if one has not the proofs for the Russian aims in March 2022 .
These aims were not the conquest, occupation and pacification of Ukraine by the Russian army, because this was totally impossible and the first two aims ( conquest and occupation ) would risk to start a guerilla war as in Afghanistan :the OUN continued to fight against the Soviets til 1949, without any western help .
The original aim ( I doubt that the Russians have today an aim ) was to defeat the Ukrainian forces on the border(for which there was no need for a mass intervention of the air force ) ,hoping that this would result in the fall of the Ukrainian regime ( the comparison with Barbarossa and Afghanistan 1 and 2 is striking ) and its replacement by someone as Lukachenko . When this failed, it was over and the Russians were faced by a mission impossible : after 5 months they had conquered 20 % of the Ukrainian territory, thus a total failure .Meanwhile,the Ukrainians have reconquered 5 % of their territory, also not a big success .
Would the intervention of the Russian air force today ''help '' the Russians ? It could make it more difficult for the Ukrainians to launch an attack, but this would not change fundamentally the military situation ,which is a stalemate . The Russian air force can fire thousands of missiles,but these will not force Zelensky to capitulate and,unless suddenly the Russians collaps, Zelensky will not be able to expel them from Ukraine .
Even if this intervention would ''help '' the Russians,they never can conquer,occupy and pacify Ukraine :the Ukrainian borders with the western countries ( Poland, Hungary, Romania ) is more than 3500 km long .These borders will be used to supply the Ukrainian resistance and must thus be guarded by the Russians ,this alone would tie more than 200000 men ,and tens of thousands other Russians will be tied in Kiev and Charkov .
Other point is the Western ( de facto US ) help ,the importance of which which is very exaggerated by the military-industrial complex and its media .
The Russians had only a few weeks to win and failed to win ,but during these few decisive weeks,the Western help was almost insignificant .
About the Russian tanks ( too many of them ) that were used :the Russians committed 2000 tanks ( no body knows how many they lost or how many they still have ) because they were short on infantry and hoped that these tanks could replace the lacking infantry, but the result was the opposite : the more tanks that were committed, the less manpower remained available for infantry duties :tanks needed an enormous logistical service and a big protection from the infantry and artillery :a tank without such protection is a sitting duck .
The Russians failed although they used 2000 tanks and a few aircraft and 200000 men.
They would also have failed if they used 200 tanks and 10 times more aircraft and 600000 men . .The outcome depended and still depends on the willingness of the Ukrainians to capitulate or to fight .
The Ukrainians can endure the war longer than the Russians.Sooner or later the Russians will have to leave ( as in Afghanistan or as the US in Iraq, Vietnam and Afghanistan ).