A million people died for not much of anything. That is some insane meat grinder. The destruction alone will take decades to repair. The animosity may take exponentially longer. Virtually everyone loses. Get your shit together Russian people, the Putin regime has to go.

A casualty is not always a death, it just means that someone is no longer able to fight. Russia has been sending people with a broken arm back to the front at times, so some people may be counted twice in that million. Traditionally one 1/3rd are death, but Russia has often been much higher. I'm not aware of anyone publishing data on how many Russians are dead. 1 million causalities is a large number, and it is the best data we have (at least public data): when other sources publish numbers it is generally close (or we have reason to think the other source is making up numbers). However it doesn't mean what it appears to.

Russia has been sending people with a broken arm back to the front at times, so some people may be counted twice in that million.

Broken arm soldier would be bad, but its not even the worst. Russia is sending soldiers on crutches back into battle:

source