I think investment is a much better way. because money have to work, you know. So if there is possibilities that you can earn more profit than savings, saving your money in the bank is just a mater of putting your money at some risk, because you are not in control of your money, you entrust your money with the third party, in which they will use it for their own investment and which they will dictate how much interest rate you will get.
And the worst thing when the bank get bankrupt you will end up only getting the insurance guaranteed amount.
But with crypto risk is even worse, actually! But if you are ready the profits faar more better then in bank!