Russia doesn’t own Russian speaking Ukrainians. Russia has neither the duty nor right to invade to “protect” Russian speaking minorities in any country.
NATO decided in 90s that ethnic Albanians were being abused with less overt evidence, and intervened on humanitarian basis. Russia got west to admit to Ukraine nazi problem in Minsk accords. Zelensky campaign platform was based on peace/autonomy in Donbas according to Minsk accords, and on denazifying/stopping the paramilitaries. Russia made every effort for peace. Peace was never an option for US.
A likely end to the war will be Russia keeps the liberated territory, and Ukraine agrees to stay neutral. Ukraine and US will claim victory by not denazifying its rulership. (the only other Russian condition for war starting and continuing)