Nobody knows and it is very difficult to predict the growth of altcoins. Can fly to the moon such an altcoin , which you never even expected. But I think it's too early to sell altcoins, we must wait
Logically, even the most trusted altcoin can suddenly fall, and the investors will lose everything. However, you risk less when buying top-20 altcoins. You should also forget about hype - do not follow it. Instead, you need to focus on the reality of the flow of circumstances. Do not be in a fuss. If you bought a Bitcoin, when it was $ 18,000, you should not hurry. It is better to keep cryptocurrency. This is the only recommendation that is appropriate in this case.