Ukraine plans to increase the level of air support for its troops. The number of aircraft involved in the battle, the experience of the pilots, guns and new technologies play a role here.
All trump cards are on the Russian side. You can't hide MiG-29 fighters in any hangar, you can't disguise them in the city between houses. Planes on the ground are vulnerable. The only option is to equip airfields on freeways. All the armies of the former USSR have such experience. It's still that load.