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.
You recommend buying crypto only when prices are low. It is the religion of crypto that coin prices go up and down every day. How do you find that time and price when it's the actual time to buy that coin?
Not only us but a new crypto user can blink and say buy coins low sell high or buy low coins and hold but which is the low price ?
To understand these things you need to learn technical analysis and have a very good knowledge of the crypto market and that is why it is true that trading is not for everyone and crypto cannot bring profit to everyone. If everyone could profit from crypto then everyone would use crypto as their main source of income