An unfortunate truth about investing is that we can't earn decent investment returns without taking on risk. On the one end of the risk spectrum, we could leave our money in a bank account earning less than 1% interest a year. Not much risk here, but no returns either!
At the more extreme end of the risk scale is spinning a roulette wheel at the local casino. The risks are huge—meaning the chance of losing our initial 'investment' is very high—but so are the potential rewards if luck happens to go our way.