We can plan long-term investment through the (DCA) method, through (DCA) there is absolutely no possibility of losing money by investing in small amounts gradually and it becomes much easier to collect more Bitcoins in the future without risk.
I often say, never say Bitcoin investment is completely risk-free. Never make guaranteed comments about the future. This can have a negative impact on a new investor. If a new investor trusts your words and enters the investment and somehow suffers a loss, would you be willing to take responsibility for that? No, you would never want to take it. Investment is still not risk-free, even in the long term.
So you should say it in a way that a new investor does not consider Bitcoin investment to be completely risk-free and can be careful about risk management. Risk management in investment is certainly important and if you ignore risk management, you may face losses. Your risk may be reduced somewhat in a long-term plan with the DCA strategy, but it is not risk-free.
No matter what kind of strategy and steps you take in investment, long-term Bitcoin investment is still not 100% risk-free. Although with the right strategy and proper planning, the chances of losing (risk) are very low, we should not ignore the fact that there is a slight chance of losing. So always try to educate yourself on risk management and also practice investment management.