Want to invest in bitcoin or anything else, you need to understand the characteristics of the investment instrument, don't just put your money in an asset but you don't understand the risks. Moreover, bitcoin tends to be more volatile and its price movements cannot be predicted in the short term, making the wrong decision then the investor will sell their assets at the wrong time causing them to lose money due to their carelessness. Increase your knowledge and read more often, especially if you are a user on this forum, there are some good threads for you to read to increase your knowledge of investing in bitcoin.
My approach is simple if investing in bitcoin do not focus on market fluctuations because the goal is to collect for the long term if the price is low it is a discount if the price is high it does not matter because I use the DCA strategy.
Risk? everything we do in this life is full of risk take that risk if we want to move forward and two important things are strong finances and holding what we have collected so far to achieve the goal.