There are indeed many nationalists and even Nazis in Ukraine (mainly in Western Ukraine). They appeared there, among other things, thanks to Western "sponsors" of such movements, in particular Poland, for example, with which Russia has a long-standing enmity, which has been reinforced by NATO for the past few decades. Russophobia in Ukraine is very actively sponsored and activated by the West and NATO in particular. This is obvious and no one hides it.
I was in Ukraine in 2008 and 2010. Personally, I felt comfortable there, I encountered minimal Russophobia. But in recent years the situation has changed dramatically for the worse.
Let me remind you that there was an agreement with NATO on the non-proliferation of NATO to the east. And this NATO treaty was brazenly violated many times.
For the past few years, NATO and in particular the United States have been supplying Ukraine and the Ukrainian Nazis with weapons, almost officially, without hiding or embarrassed.
And yes, the problem of the LPR and the DPR has not gone away all these years.
Of course, I am against any war and do not support war. I do not condone Putin's actions, but NATO's pressure on Ukraine and Russia through Ukraine is obvious.