Its impossible to have one or two coins in crypto space because one or two coins can't solve all the problems we have in this world in every aspect of technology or others, if you want to keep a coin for a long time make sure the coin or token solves one or two problems in crypto space or the world, this type of coins don't die easily because they have real use cases, its simple as that
As long as they have support, as long as they have usage they will remain in the market, coins become shitcoin or die because they are useless and they do not have a community, this is one of the things that you should look for in a coin before you invest and if you invest on this coin of coin better dump it.