You answered yourself where the millions come from.
I didn’t, if you look at the link provided, Russian casualties have actually been going down. Apparently you don’t have a first clue regarding the subject you’re attempting to debate here. Let me explain a few basics to you. Most of the casualties in this war (around 80%) come from artillery fire, and Russia outguns Ukraine by a factor of around 10 to 1. Ukraine has at this point run through much of its professional army that was motivated and well trained, they’re now increasingly relying on conscripts with little training, and no motivation to fight. As the professional and motivated core of the army continues to shrink, an inflection point comes where the whole army starts to collapse. This is what happened to Germans at the end of WW2. This is what’s already starting to happen in Ukraine now. Armies don’t fight to the last man, once the collapse starts, it progresses very rapidly where the cohesion of the army falls apart.
Also, I notice you have problems with reading comprehension. Because I told you the opposite. Putin can’t in fact stop the war because that would be an incredibly unpopular move politically in Russia.
I’ve been explaining the same thing to you over and over in many different ways here. All you do is just keep regurgitating the same few points you’ve memorized. You’re not engaging in any actual discussion here, so I’m going to stop. Feel free to believe whatever you like, but I do hope that once the war ends you’ll do some self reflection and ask yourself what was achieved by prolonging the conflict.