Profit in bitcoin investment is not guaranteed as you think telling people that their success rate is much guarantee could make them invest with money they might be needing within a short while, while we to invest with the money we won't be needing for long is in the process it doesn't work the way we expected it won't be a thinking to us because we invested with our discretion income.
Bitcoin never guarantees profit, that's right. But there are many new investors who think that they can make huge profits very easily and in a very short time, but then they forget about the real volatility of the market, and the important thing is that they consider Bitcoin investment as a quick profit scheme and invest in Bitcoin for the short term with the necessary money (which they may need very quickly). But after a certain time they do not get the results they expected, and they sell their holdings with a loss, as a result of which they have to face a lot of problems.
That is why the real nature of Bitcoin should be understood first, only by making wrong decisions do investors face danger. Therefore, the most important thing in investment is risk management first. Not short-term trading but long-term investment. You should invest such an amount of money without taking excessive risks, which will not harm your personal life if you lose it. Invest a certain amount in DCA regularly and forget about it, invest and forget, no matter what the price of Bitcoin is, never worry about the price. Holding it for the long term will definitely give you a high probability of giving you something great in the next 10 years or 3 Bitcoin cycles.