Cryptocurrency investment is a very risky investment because of it volatile nature however there are coins that are not risky to invest in such as Bitcoin, investing into Bitcoin and holding for a long time is a very good investment and not risky, Bitcoin is the best crypto coin in the world and has a good record history of it's growth in value and in price, people that always panic when they invest into Bitcoin are those trading Bitcoin, they are the one's always in fear because anything can happen at any point in time, I have a friend who's into Bitcoin trading who sometimes loses money, there's a very high risk in trading and that is why I advise newbies not to go into Bitcoin investment by trading.
Long term Bitcoin investment is not risky, and I will advise everyone to go into it, a lot of people don't like waiting for long to gain profit and that is why they always choose to invest in new coins that will later lose value and they will lose there money, Bitcoin investment is not a Ponzi scheme were you can just invest and get huge amount of profit the next day in Bitcoin investment you need to have patience and also be consistent.