In Conclusion
Crypto trading, crypto referrals, and crypto copy trading off three of the best ways to make money with cryptocurrencies in 2021 and are still three of the least saturated methods for being able to generate an income, with there being plenty of opportunities available right now to be able to use the strategies and techniques to make money.
You wrote a long topic and jumped to a conclusion that there are three ways to make money with cryptocurrency in 2021, but you did not mention about holding.
In bull market, the easiest and effortless way to make money, without stress, pressure, psychological headache is holding. It is obviously that I don't suggest you to hold to die but hold and be clear that which price you intend to take profit.