I've voted for Trading cryptocurrency. Trading cryptocurrency is much more profitable because I've once traded forex I couldn't even understand more about it. But so far, I found trading cryptocurrency much easier and profitable.
Trading forex is excellently profitable within a space of time. Cryptocurrency trading volatility is dull compared to forex, it had been estimated that market capitalisation of forex is disgusting and surprising, getting profit and loss is essentially fast in forex, one can loose $2000 within 8mins but that can happen in cryptocurrency trading when talking about lost. One considers crypto when holding coin for a very long time just as holding hectares of lands for the future. Conclusively, forex market is more preferable than crypto I terms of quick gains and profit.