Its hard, I'm saying that it's hard to find good and true crypto investing site. It's never to late to invest. Crypto world always welcome people to invest. From my point of view 1st you need to check about the website and then invest or else it will be hard for you to invest and earn.
Maybe if you think that it's difficult to find a good coin to invest, you can choose bitcoin only than the other coins because what you invest in bitcoin will give you a better result.
Besides that, you know that bitcoin will become stronger by now so the chance for you to make a bigger profit will come and you can start investing in bitcoin from now on.
But if you still want to invest in altcoin, you need to research each coin or at top 10 coins list, and I am sure that you will be able to find one or two or more coins as the investment.
It is not too late to invest in bitcoin and altcoin if you can find the right coin and if you choose bitcoin only then it will be the best investment you can have right now.