It is true that most of those who have tried to earn bitcoins through trading, have done so through the exchange of cryptocurrencies, however it seems increasingly difficult to obtain good profits in this business in a market as unique as the crypto one.
That is why I would recommend to all those who know the technical bases of trading to try a more stable and predictable market than the Crypto market, and that is the Forex market, where what is exchanged are fiat coins.
And fortunately there are Forex brokers that allow trading with denomination in bitcoin, making deposits and withdrawals in Bitcoin or even trading cryptocurrencies as CFD.
The important thing is to look for alternatives, and this is one of them.
Forex trading has a very high risk, but the advantage is that it can produce a lot with a short time, in addition to high risk but this forex trading has advantages such as flexibility of place, time, can transact at any time, can do it with limited capital and relative transaction costs low, maybe this is the reason for investors to use forex regardless of the risk.