Regarding ethereum, I can not say anything, because I really got a good profit thanks to the investments of ETH, because I bought coins at the end of 2018, when the price fell to 78 dollars. But in relation to other altcoins, there are no real predictions that could be true.
you really are lucky to benefit from an extraordinary investment. that's proof if we can take advantage of the moment we can benefit. even though the market goes down if we believe in half a year we can get a big profit. ethereum is still feasible for us to buy now, there are still many future moments that we must follow.