The Russian are trying to advance near Avdiivka and dying at a rate of >1000/day.Or may be they are just wasting time and bleeding Ukrainians slowly. Ukraine has already experienced over a million casualties and is facing post Soviet demographic decline like the Russians. But the Russians are a 150 million strong country compared to 38 million strong Ukraine.
Your figures on Ukrainian casualties are BS. Russian doesn't even have more artillery anymore, before we even get on to accuracy and drones. Russia is bleeding themselves slowly.