When I read the news that the Ukrainian army is unable to repel the attacks of the drones that Russia acquired from Iran, it becomes clear to me that the Ukrainian surface-to-air defenses are very weak or non-existent at all....
Sure, that is why the SUs and MIG are all over Ukraine supporting the ground forces - Except for the fact that they are absolutely absent since day 0. RF air superiority, which was taken for granted even by Ukraine allies has proven to be non-existant. It is just another of the myths about the RF army that have been vanished after this botched aggression that has benefited only the US.
Russia is using drones and missiles, many of which are intercepted and many of which are inaccurate to the point of being useless because they cannot risk planes and pilots to missions in a relatively well defended sky. Trying to win a war by cutting civilians from water, electricity, hospitals and schools is useless.