The biggest problem with Ukraine... is that they aren't fully detached from Nazis:
During WW2, Ukraine was allied with Nazis and fascists, helping them exterminate Poles
21st century Ukraine, still uses Nazi symbology, the fascist salute, a fascist hymn, has set national support for WW2 Nazi combatants, and even their national shield is a fascist remnant.
All of that has nothing to do with the Russian invasion... but it does give Russia's propaganda machine an awesome excuse. It's just too easy to get people hooked up with some actual facts, then get them to do a leap of faith and fall straight into full propaganda... and Russia knows it.
Israel and Palestine is a particularly juicy case, where there are really shitty groups coming from both sides, ending up like an "all you can eat" buffet for every propaganda machine out there. No matter what narrative one wants to spin, chances are they'll find a latch point in the Israel vs. Palestine conflict, even contradictory ones for different audiences.