No one can safe newbies from bounty mistakes, I wasted a whole year trying to figure out what makes a project better than the other, I never knew anything or had a teacher who is ready to show me the way but after couples of mistakes my eye gets more opened and now my research is enough for me
Indeed, it is very difficult for us to be able to distinguish between good projects and fraud projects because both are very well designed and fraud projects also look very perfect like real projects, I think you should ask for recommendations from forum members who are more senior and experienced in bounties and of course it is better to joining a bounty project that is handled by a trusted and experienced manager, so that the project may not be a scam because the manager certainly will not risk positive trust just to handle a scam project.
Although members who have a high level of expertise in bounty selection in this forum can give us some reasonable advice, combined with selecting potential and reputable managers, it may limit the number of times we choose fraudulent projects but the improvement is still quite low because the quality of the projects has diminished, even for professionals, they still feel scared when participating in a project they value well. Perhaps we should still rely on luck to participate in bounty, luck right now is a very important thing in bounty.