Particularly one of the ways to earn with BTC is by trading, many are dedicated to scalping, others simply put a position in LONG and the other defend it with a leveraged SHORT, this is a practice that comes from the 1800s, Jesse Livermore applied it, currently very few traders do it because it gives good results only when very high amounts are handled, it is similar to scalping.
The advantage of this strategy is that it is always in the market, if on the one hand it loses on the other it is recovering and there is the possibility that it will come out with a positive balance, although the strategy is very risky, many traders dedicate themselves to this practice.
Jesse Livermore broke one of his rules - not to exceed the permissible risk, which resulted in not only a complete loss of his funds, but also pushed him to suicide. Despite the trading rules he developed, he still remains a loser for many, and for this reason, few traders use such trading tactics.