It is depressing to see that some projects are really just created to fail so that very few people can benefit. This fraudulent projects are non-stopping because the scammers are getting smarter in making their project and promises believable. That is why we should not use ignorance anymore as excuse for falling to them. Read, study again and again about cryptocurrencies especially the project that you want to pursue. And always try your best not to be easily swayed by your emotions so they can't play you again.
I think it is difficult to do that because we know that scammers always have their own way to be able to make others believe and want to participate in the projects they bring and this is normal when others are persuaded by what they say and indeed we should more careful and not in a hurry in making decisions, for me personally it's good for us to share opinions with our close friends who we trust with the project we will follow before making a decision.