Investing in cryptocurrencies is in itself a high-risk, high-reward endeavour and hence should be approached with enough knowledge and caution although sometimes one can be unfortunate regardless of the amount of knowledge gained due to the upturn of events in the crypto market. In purchasing crypto currency depending on your goals (short-term term or long-term), for short-term that is buying when the market is low and selling when it later rises the risk involved is that the price may not rebound and hence continue to drop or remain stagnant thereby encountering losses while for long-term goal that is buying and holding regardless of the market trend the risk involved is that if the market experiences a prolonged downturn the value of the crypto might decrease significantly. So in all there is risk in cryptocurrency investments whether long-term or short-term.
As a newbie, I understand why you chose the elaborate word "cryptocurrency" rather than simply using Bitcoin. I will guide you a little so you can feel at home in going about the whole thing the right way. This section of the forum is mainly for Bitcoin and how to go about investing and holding it. We prefer retaining that word "Bitcoin" which is what we are discussing and we don't care about the other numerous things that mimics Bitcoin and most often end up as shitcoins(shit in the sense that their value erode with time and often lead to people holding worthless asset).
Every investment has some elements of risk and so does life itself including our daily routine have risk so nothing is completely free from risk. Bitcoin investment have its own risk as well but you can never compare the risk in Bitcoin to the numerous shitcoins. Therefore, concentrate on building a Bitcoin portfolio that you can hold for a long time like 4-10 years and see how happy you will become doing that.