To know before the coin will explode is certainly not easy. in essence you need to be selective, do your research, ask questions and investigate before investing in them. And keep in mind also that you need to invest in what you can lose. don't be too greedy
The easiest way to do this is when you have your finger on the pulse of the project.
The point is to find projects that are promising but are not yet sufficiently optimized for the market, for example, have vulnerability or difficulty in adapting.
It is these projects that will shoot like crazy in the future, and you need to look for such and keep an eye on them.