To support the idea of "Experience is the best teacher", I also had the same experience with you, before I invested in any projects though, I tried to give myself the necessary knowledge. However, some of these are not enough to understand it well. Later on, I proceeded on investing small amounts in various projects... some of which are successful, and some are which I got scammed. From that, I understood their processes, furthermore, these experiences helped me to become less vulnerable to fraud projects.