It is always risky to invest in crypto coins. Not only for new coins, old coins or top coins also have risks in investment. But the risk can be varied or have different levels. Investing in top or old coins can have smaller risks because most of them are already proven for many years to exist in crypto market. They are also owned by established projects that have good funding and experience in crypto space. While for new coins, we don't know how good the coins to survive and develop in crypto market since they are just launched. It should take some time to show us how the potential of those coins in the future. That's why we need to be more selective to buy new coins. Some of them can survive and grow well, but some can be delisted and be dead coins in the future.
The risk of old coins in a market that already has large trades as well as a strong market is market correction and volatility. when you can master yourself in good investment planning, I believe the risk of old coins will disappear.
but for coins from new projects and even recently traded on the market. most of the hype happens very quickly and then the correction is also very strong. Unfortunately, some new projects are not ready to be corrected, because the market is not yet strong and will be a test for projects to rise or sink.