When the crypto market goes down to the level then the right time to invest is considered. I think the crypto market should now be able to pick up the requisite coins for the investment. If you want to get more profit, spend more time then you can keep investment. Even now I have decided BTC and some coin which have top coinmarketcap.
it is true that the most appropriate moment to buy coins is when the coin price starts to collapse, but to be able to get the moment of collapse of the coin price is very difficult to predict when that can happen.