This is going to happen a lot I think, across many areas, not just flying training. I'm aware of university students around the world finding life being made very difficult for them because they hold Russian citizenship. Unfortunately unless you, or they, relinquish it, you are likely to be associated with Russia's criminal regime - irrespective of your own views and behaviours. Sorry, beyond relinquishing your Russian citizenship, I don't think I have many useful suggestions to make.
There are some excellent EASA schools in good weather and friendly country in Spain and a friendly country in Ireland!
G