I looked up online calculators and it gives me 21.1% from sberbank. However it's just interest rate. And with additional fees it shows up to 24.4%. And you should bear in mind that actual terms tend to be worse. There is also a "military mortgage" which "starts from 18.9%", but it is not any better tbh.

Edit: apparently there are cheaper mortgages starting from 5% and 6% if you are buying "new property" that are labeled as "IT" and "family" ones. I don't know terms for those, but they are definitely not for everyone and they might have conditions which restrict those to a really small group of people. And you can't buy second hand property with those.