Banks is not really aimed to be a source of income to start with so obviously it will not make you rich. Those small profits you are getting are better if you are saving your money there for a long time but in a short time, I guess it is not just use Bank as your safe.
If you really want to earn a good profit, since you have a Bank then make a loan, start your own business if you have the skills. If you want to invest then go with it, as long as you know what you are doing keep it going.
Exactly. Banks were never meant to be an institution to make you rich over time. Considering that fiat currency is subject to inflation, your savings could be worth a lot less than what it is right now within the future. What Banks really offer is unparalleled security and trust, which allows anyone to safely store their money against theft and fraud. Of course, they allow you to earn some money by holding your money in a savings account, but the earnings are rather small than other options available in the real world.
Your best bet would be to save your money into a Bank IRA account for greater rates, while the rest would be put up into cryptocurrencies like Bitcoin. This way, you'll become rich within a few years from now, as you build up your path towards spending less than what you earn or save. Therefore, while Banks won't make you rich anytime soon, they could help protect your money for quite a long time. Just my opinion