You sound mindfucked, there are no prominent Nazi politicians or Nazi political parties in Ukraine. Are there a few ultra-nationalist grunts in Ukraine? Sure, but like anywhere else hey have little to no power in Ukraine's governing.
Russia? Russia had some prominent Nazis. Like founder of Wagner:
And to repeat again, there was no bloodshed in Eastern Ukraine untill armed Russian citizens, with Russian government support, came to take over Ukranian cities. NONE.
So your story about how the conflict was caused by some sort of Nazis is of course a bunch of stupid, counterfactual propaganda.