The word "smile" looks like is not very known in Russia...communism ended, please smile and be more open to foreigners.
Russians don't smile simply because it's not in their culture to smile to strangers, but once you break the ice they are the best people and the best friends in the world. Go to Siberia and find out by yourself 🙂
Without knowing Russian it's possible to communicate in larger cities like Moscow and Saint Petersburg but not with everyone, and if you show a little interest in their culture and language they will literally fall in love with you. Moreover, to become a resident you need to sit for an exam of Russian knowledge, history and law.