In Forex trading, If you have big capital than you can make profit from Forex. Otherwise, if you use little amount in Forex than definitely i will tell you, you could loss your whole amount. Also in Forex, we could try to practice in demo account, it help us to learn about how to profit and recover the loss.
But in crypto currency trading, we could do it with littler capital.
But both are risky, also the main different is in Forex, we could make big profit from it, but in crypto it made for little profit.