Search "Nazi patch Ukraine" or some variation on Twitter. I'm not exaggerating when I say that there's hundreds of examples - many of them posted by the BBC, Reuters, or Zelensky himself.
https://www.youtube.com/watch?v=Mhg8AXXHoRE
I did find some photos of supposedly nazi-symbol-wearing Ukrainian solders but I didn't recognize the symbol before reading the explanation, maybe they didn't too?
Also, I found some photos of Russian soldiers wearing such symbols too:
https://www.businessinsider.com/russia-fighter-neo-nazi-symb...