Even in stock market the risk is also there not just high but still you can lose your money...well here in crypto you can start as being a bounty hunter and build-up some capital to start your investing on your chosen coins and if you manage it properly you can double or triple your money in just short period of time. The progress of your investment will also depends in your strategy.
I choose both and both have risk to take, but for now I prefer for cryptocurrency because invest in a coin nowadays os really profitable especially when the coin is one of the best or top coin. In crypto once you don't have money to invest you can get money by participating in a bounty and wait for your reward. While being a stock market is also good because it will also give you profit, but you need a huge capital before you can invest.