There is a risk in certain ways almost everywhere. With fiat it is the inflationary risk and the hyper surveillance possibilities once it is fully digitized. With cryptocurrencies you have a whole lot of other risks that maybe regulatory or legal, but also volatility risk. There is of course also technological risk involved, which is not quite the case for fiat currencies.
risk will always exist wherever it is because risk is a form of uncertainty that has the potential to be bad for a person's life. When people feel anxious about their health and are afraid that they will not be able to pay the expensive costs, people choose to buy health insurance to ensure a sense of security from economic difficulties when they are sick. This insurance is one form of us buying a guarantee of uncertainty but is selling well in the market. In investing, don't we know each other's portfolio theory as a risk solver? If we recognize what risks we will accept, then we will easily find ways to reduce the risks we will accept.