Maybe because the altcoins that you have chosen where shitcoins,spend a lot of time in researching first before you invest to any of these shitcoins because most of the existing and new altcoins are coming from shitty people who just want to make more money.
But sometimes think it's hard for altcoin to survive in the future, only some altcoin will survive and have good grades. Altcoin is very vulnerable to bankruptcy, so we need to be cautious and must have a good judgment. But I made altcoin only as a short-term investment and after a while I transferred my investment to another altcoin.