I think The value of Bitcoin is highly volatile, and its price can fluctuate significantly in a short period of time. This makes it a risky investment, and some experts warn that the cryptocurrency may be in a speculative bubble.
Bitcoin investment is risky to those who do not study its market movement and price history. It is a risky investment if a person does not know that Bitcoin is cyclical and it has a tendency to crash which open the window for entrance and accumulation and a tendency to break its ATH every cycle which signals the time for reaping profits.
If a person is able to know this, Bitcoin investment is not risky at all but instead is a profitable venture because of the pattern laid out by its market history.