For me, cryptocurrencies are more risky than stocks. I'm both crypto and stock trader and I notice that crypto is more volatile than stock market. Right coin will help you to increase your portfolio. There are many shitcoins that keep dumping and we should identify first if the coin that you will buy is a shitcoin or not.
Everything in life requires risk, even when studying in 'College' you don't know what will happen after your graduation, and you don't know if you can finish your study and if you can handle it well, there is no really sure thing in this world, everything needs to take risk, even having a friend, partner in life is always a risk especially in investment which money is involved.