Bad decision making following others call and forget to do your research.
You'll ending up losing your money by buying shit coins who seems to have a good spread coming from the pumped group or pay group who do the spread out, there are many people who falls from this scheme ending up regretting because of losing funds as they've been trapped around with project that was been abandoned.
Newbies are likely to do this mistake all over again. They believe in others' calls without doing research. It sounds easy because those people that they listen to labels themselves as crypto experts and traders. And they are easily caught because they seem to believe that whatever coin they say, they're likely to buy it. That's the crowd call before and it happened many times before and keeps on happening for those newbies that don't have someone to guide them.