Investing in banks is riskier than investing in cryptocurrencies, but the returns are very limited. Cryptocurrencies have come as a boon to those looking for a platform to earn more. However, before investing, an investor must know some basic things, especially to be careful about security issues for saving crypto assets, such as keeping the private key or passphrase of the wallet in a good place and keeping yourself away from relatively risky investments, etc.
It will depend on what coins to invest and what banks to choose for saving your money.
If you choose the banks with good reputation, your money will be quite safe at banks. But most people do savings in banks, they don't invest in banks. In my country, if people want to invest their money in real assets, they will prefer to choose lands or Gold. Regarding investing in crypto, it will be riskier if you choose random coins, especially the new meme coins. There are a lot of new meme coins to last in a short time. The developers just expect to gain money from early investors. Although we choose fundamental coins, many of them have no progress after few months or years. We can say crypto investment is safe if we choose the most recommended coins such as Bitcoin and Ethereum.
Investing in crypto is not for all, you need good grasp on how this market works. This is why for ordinary people, they won't touch this market. For them, tangible assets are preferrable to invest as they can see it.