Expanding NATO was a mistake. But Putin is still responsible for this war. And Putin alone.
And your military analysis is stupid. So what if Ukraine has not discussed its casualties? You act like that is some sort of clever insight. Which is laughable.
We all know they are outnumbered by their attackers, and the longer this goes on, the tougher it will be for them. They have overperformed so far, but that might not last.
But it might, since the Russians have been so farcically bad.