For altcoins, buy low and sell high, and you will make a profit. Although this statement is correct, it does not go for all coins. Some people think that when the market rebounds, their altcoins will rise with it. But the result was leaving the market at a loss.
True, this statement should be announced on the entire forum. Even though people called this "altcoin season" but in the reality it's not all of the coins are having the good "season". Make sure to not be blind with the hype and still do the research on whatever coins you are interested to invest on, it's just to make sure you are investing on the right coins.