HODL an Altcoin is not a good option anymore unless you believe that coin will have a good plan, product, and team.
If the price starting to drop, personally I would sell it to prevent my loss.
Even when you believe in a coin of one faith is not enough, look at how many good projects cost nothing, because this is ridiculous. The only thing you can rely on is technical analysis.
if you want big profits you have to be willing to take risks including holding altcoins and believe if prices will go up as long as the project is still running because it's not easy to develop projects, they need time and if everyone doesn't believe how they develop the project. we must be more patient if we want something more.