Here, enlighten yourself:
‘The Return of Industrial Warfare’
https://www.rusi.org/explore-our-research/publications/commentary/return-industrial-warfare
Nothing you post will change the fact that Russia can’t manufacture precision electronics for advanced guidance systems, navigation systems, or sensors. Or that Russia’s economy is a basketcase to the point that they can’t even afford to employ their most advanced tanks and weapons in their own military, but manufacture them purely to export to other countries for cash.
Nor will it change the fact that the US can probably singlehandedly replace the Ukraine’s military three or four times over with just the equipment we have that is on its way to obsolescence.