Okay, name the tactical defeats the American military suffered at the hands of superior forces in Afghanistan. Where and when did Taliban forces overwhelm the American military, inflicting so many casualties and doing so much damage that America's only choices were to leave Afghanistan on the Taliban's terms or all be killed?
Because that's what a military, tactical defeat actually is. You're saying it's "amerilard cope" to say that didn't happen. So tell us where and when it happened.
Russia is frequently suffering tactical defeats and stalemates in Ukraine, where it is physically unable to advance the front, or occasionally even hold a position, at all. We're talking defeats of the sort where your only options are quit or die. Yes, you can still win all the battles and ultimately lose the war, but Russia isn't even winning all the battles right now. It wins some, loses some, stalemates others.