Every investment bear some risk. The investment on which you do not have any control is a little bit more risky I think. I cannot understand that this type of investment is mendatory or not in case of bank deposit. If it is mendatory then I will say it is more risky than bitcoin. If you invest in bitcoin you have full freedom to withdraw the investment in right time. You can enter and exit from the market as your will. But the bank investment in your country is totally uncontrollable.

So, Invest in bitcoin bear less risk than bank investment, as you say.