Very easy for us westerners to criticize Russians for not protesting. I wonder if you'd be protesting if you lived in a place where doing so could get you killed?
Putin has been in power there for 20 years. Been attacking neighbor nations for at least 14 years, offhand. He has a clear track record. Info has been out there, and for a looooong time ordinary Russians were able to get facts, if they wished.
They've had plenty of time to move away. Some have. Some chose to stay. These are the consequences of the choices they made.