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.
Trust me mate, for someone with no knowledge of trading the market, they will as well meet the same fate in the Forex market just as they ended up having it in the cryptocurrency market. Nothing different at all. They are all markets and the same principle applies.
If you fail to trade without a strategy, failing will be next outcome for such a person and as long as you are knowledgeable, you can trade any market that you want effectively as long as you understand the basic things you need to know about the market.