Bank investors have more certainty because there capital is completely safe but they give 8-10% annual profits to the investors of per year. But it is comparatively less in terms of profits.
On the other hand you will get constant profits from crypto as if you are experienced in trading then daily profits is possible. Otherwise you can get profits by investing. However crypto investment puts your capital at greater risk (main point).
The best investment approach depends on your risk tolerance and available capital. If you're comfortable with high risk for the potential of high rewards, consider altcoins. For stability with lower returns and less risk, traditional banks are a safer option.
Personally, I recommend diversifying your investments. Allocate a smaller percentage to altcoins to reduce overall risk in case of market downturns. Remember, there are no guarantees in any investment, and risk always exists.