Been joining a lot of campaigns before I quit, I manage to land some decent campaigns and I can say that somehow it always lands on the luck. Trust me I'm reading everything before joining one, still I've been scammed. Though most of them still give coins as a salary however, they still end up shit coins or no value at all. Now I'm starting over hoping to land some decent ones.
The fact that the coins are crappy means that the project is crappy, and most often this can be determined by reading the white paper or looking at the team or studying the technical component of the project or by some other factors that require a more detailed deepening of the project. Unfortunately, most people do not do this, I only read the conditions that either suit them or do not suit them, and then they just do the work and wait, I complain afterwards that they once again received shit coins and wasted their time.