Probably the fewest altcoins in 2020 will still exist. However, there is a presumption that those projects that survive will emerge stronger than ever from the hard times.
altcoin will never die, only dead rogue altcoin, poor quality, if an altcoin team is ok and project ok then it will never be easy to crash. Although their prices are low, they will rise sharply in the future. do not worry. The market will recover soon.