It would be better if you can determine to yourself as to which you have better handle on the matter. If you have good knowledge in cryptos or how the share market works. IMO, I think share market requires high investment money than cryptocurrencies where you can start in small amounts if you don;t have sufficient money to begin with and work yourself from there.
Invest in the crypto currency. If you learn to use manipulation on the market in your favor - you will be rich, if not, you will lose money. So learn and earn.
Can't say the OP has the power to manipulate the market in anyway considering he is still asking where to invest better.