This is the main problem because no one knows when will be the right time to buy alts. Because sometimes it is not on the price weather it is high or low sometimes we also need to consider the kinds of altcoins that we buy, there are a lot of high price altcoin that can still make a 3x profit and there are also very low price altcoin that can still make us loss. We buy the dip? It is less risk but still no assurance because we cannot control the price I think the best way to earn is to select the proper altcoin to buy even price is high.
When it comes to buying it is good to always keep in mind that the best thing is to know how to choose the altcoin, in my case I do not choose an altcoin that comes from a nascent project, this is something that is also buying to try your luck and I would not be thinking with reason In the case of BTC it is different because BTC is a safe currency, in case it goes down, I have the full conviction that the price will rise at any moment, or even if I have to wait some time I know that will happen, I would not risk with altcoins new, for now I would go with altcoins that have a lot of community and a relevant future.