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.

A Russian study showed >50k Russian excess Ukraine War deaths at the start of the year, and that only includes the bodies that were returned home and got officially buried not the corpses rotting in trenches.