Crypto isn't a scam, the people who say this are the those who don't enlighten themselves about the market before investing. As we all know the market always goes through a dynamic fluctuation, the prices changes due to several factors. As someone who's into market analysis you are supposed study those changes and learn to take advantage of them. But what most people do now is that they skip the learning process and probably just copy trade of other people, after losing they will say It's a scam whereas they didn't really give in enough time to gaining knowledge.