the bank just to save your money and for security you have to pay a fee to the bank, so how can it be rich if saving money in the bank. invest better if you want to be rich because your money will increase, will not decrease as it keeps your money in investment. unlike in the bank that charges you.
Yes of course Investment is a great way to increase our money especially invest in crypto, although invest in crypto have a risk but it is really promising to make a lot of profit, as long as we have knowledge about it before invest and we choose coin that have a good potential to increase it's value such as bitcoin.