it's the tactics the soviets used in the eastern front, fortunately the Ukrainians are fighting for their homes, not conquered land, and have a massive equipment advantage, but yeah Russia has like 3-4x the population of Ukraine, so Zap Branigan quality tactics are still dangerous
Frankly if the Russians want to keep throwing their lives away, scare them into care, put flamethrowers on the tanks, and make them terrified, during ww2, Axis forces would fight back against most things, but they wouldn't fight the Churchill Crocodile,
a guy might not be afraid of being shot or blown up, but total immolation is a completely different animal. Get the Russians to fear for their lives and make them realize they don't want to die , I might seem cruel but the I believe the brutal nature of flame weapons would save both Ukrainian and Russian lives. Once a the Russians see a few of the numbers charred , they'll be terrified, they'll get the message