Mintgomery and Zhukov were great believers in massed artillery barrages. UKR’s only chance in this scenario is to do the same to the RF, otherwise they will inevitably be ground to dust: their bravery and National pride won’t defeat massed artillery.
How quickly and efficiently their supporters can achieve this is critical. Exciting dogfights or low level rotary isn’t going to be a game-changer: that’s Tactical noise for YouTube etc. Only the thunder of the guns from UKR can swing the Strategic balance.