... Ukraine is fighting at home with the backing of most developed countries.
The 'developed countries' gave the Ukroids just enough weapons to enter battle but not enough (of the right type) to make much of a difference and certainly not enough to win much of anything or kill many Rooskies. Compounding this, Russian strategy seems to be to manage the locations of fighting to be where it is advantageous to them by simply withdrawing. Again, 'Mongolian' tactics from _way_ back.
It's hard to hit dug in professional soldiers so the Ukroids seem to have more or less contented themselves by hammering away on civilian targets and populations where they can rack up more kills I guess. Donesk especially.
I remain suspicious that Zelenski and Putin are to some degree working together to get rid of the apparently undesirable populations in certain areas of the Ukraine. Those 'developed countries' are certainly doing their part in this effort. Whether the Russian deep-state is in on it or not, that's what's happening. One spigot goes into refugee bucket and the other goes 6 feet under the ground.