I wonder what kind of projects you'd like to invest. some projects are not so popular, but they do are good projects, and would have a bright future.
For me, the most important condition for choosing a suitable project is having a detailed investment plan. I need to understand how a certain project will develop, what technologies it offers, how it will use the attracted investments. To minimize your risks, you definitely need to study the whitepaper, the team of authors and the development strategy.