Altcoins are really a lot. But very few promising. I think that now you should not rush to invest. Because only experienced investors can choose from such a large number coin of good coins.
Altcoins are often not trusted by many investors this year because the current investment trend is focused only on the top 20 coins so other altcoins will not achieve any major growth. Currently there are many investment options for everyone but it is best to spend more time researching because altcoin is always considered a risky investment and often easily collapses if the market fluctuates.