While that’s true, I would argue the total human cost is similar. Your estimates do not count stolen and killed Ukrainian civilians. Adding those would make the numbers far closer, especially since no Russian civilians are caught in this conflict so far.
Not saying any of this is OK. Just unfortunately the numbers are very similar. War is miserable.
*And yes, the fact that Ukraine is suffering more losses due to the fact that it’s Russia invading absolutely makes Russia the bad guy here. I’m just pointing out that the losses are unfortunately very close.