It's up to you if when is the right time for you to buy. If you want to wait more price down then wait but if you think you need to buy now, then buy. Earning profit is depends on when and what is the value during the time we buy. For me, I would rather buy now and if the price will still go down, then I buy more. Ethereum and bitcoin are coins that is worth to buy and other altcoins like xrp and bnb.