It's not late to invest.
My suggestion, buy cheap altcoins with a good project and a limited supply... avoid coin that the supply are trillion coins.
The number of coins does not matter. What is important is the total market cap not the number of coins.
Anyway, I don't think it's late to invest. It's a good time to invest in bitcoin and altcoins and trade and fill your bag for future. There were many people thought that it was late to invest in the past year And they regret. If you don't invest now, you might regret next year or even sooner.