There is no indication that Russia is winning this conflict. They are pulling back from their original goals to save face with their people, because they don't want to end up as a complete loser. It is reported that Russian forces are shifting their focus away from their country-wide attack on Ukraine and refocusing on "liberating" the separatist region of Donbass. This is obvious proof that this war is not going according to their plans and that they were not ready for such resistance from Ukrainian forces.
The current situation doesn't seem to favor Putin's regime either. There have been multiple reports of a large number of Russian casualties and the war is becoming less popular in Russia. The "victory" that Putin was counting on is fading away and many Russians are now asking if Putin's strategy of forcing the Ukrainian government to surrender is the best way to end this conflict.