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).
It depends on you, crypto investment has quite a big risk, but banks are like that, banks can also go bankrupt, many big banks also fall, keep in mind that you also get a definite profit from the bank, 8-10% profit per year, but the currency is also weakening, just the same. It still depends on where you choose and want to put money into altcoins or banks
Therefore if you want to save money in a bank, choose an official bank that has the best reputation in your country. because in many cases in my country people are tempted to save in small or less popular banks because they are promised quite large interest rates and in the end they lose everything.