What are you even talking about? The Russians have gained more territory in the last month than they have in the past, like, 12. It's escalating if anything.
Today Russia controls MUCH LESS Ukrainian territories than they controlled in mid of 2022. Whats nor clear? And I am not even taking about their embarrassing retreat in end of March 2022.
I dont understand what you are talking. You asked why Russia is advancing, I answered you: because they have lots of manpower and dont care about their losses.Between Zelensky's (bet your ass reluctant) change in public posture and the reality-shift on the ground, this is going Putin's way, even if you don't factor in the incoming US presidential shift. You sound like "Biden's completely cognitively okay, and fit to contest the election!" three months ago. Sounds good for morale, not the actual reality though. They're done. It's just a matter of how the "they're done" pans out, and over how long.