No matter whether we invest in Bitcoin or altcoins, both have risks. I don't say that it doesn't have much risk because there are still a lot of people who bought at ATH years ago, and we don't know if they are still holding it or selling it at a loss, meaning the risk is too high, mostly when you don't have knowledge and just want to buy at green. With altcoins it has more risk because first ton of coins right now that you want to invest sometimes just got died because the developers and owners left and also others just dont run for a year as there are no developments on it that is why for long term Bitcoin is better but it doesn't mean that it dont have risk