Crypto is like a game for the smart people and if you aren't smart and ready for it I don't think you will be among those who will make money from cryptocurrency, also have this in mind that your lose is another's benefits while your benefits is another man lost, it depends planning if you sets yourself properly you would see that it's not scam rather a game of survival for the fittest so you have to map out when is good for your investment and when to take profits because I can understand that those with little or no experience will call it scam.