When it comes to the safety of the money of course bank is one of the safest.But if you want your money to double or tripple or even more you can put/invest it in crypto but no assurance.
At this time since crypto still new to us there is no guarantee yet that our money will be safe in their position. While in bank it is already proven in terms of security. In case we have problem bank is always there while crypto its hard to get your money back if incase system will not be available.