Scotty Scotty Scotty do you think you do yourself any favors by asking me for proof because it's easily found, everywhere we look.
They are simply throwing their oldest junk first into the attrition, because that's all they need to do to show we can't throw much at them that warrants more. I don't think you really want to see the damage that would be done by Mach 4 missiles if they really set out to flatten Ukraine. Besides, they are rebuilding in Ukraine, not just flattening like Israel.
I can provide you with links to all this too if you want to be slapped by evidence, it's not difficult, just look around.