There are too many scam projects right now, even some which look good from the outside are high grade scam projects. Most will want to take advantage of the greed of crypto enthusiasts especially by giving huge bonuses or making promises of big ROI. Let's just be extremely careful when making investment decisions, do not invest because others are investing and also do not invest what you can't afford to lose.
When talking about a scammer project:
Don't invest in those you don't even know who they are and what their true purpose is? Are they recognized, have a famous partner? Projects that show teamwork activities will not necessarily succeed or end well.