Whoever believes in one coin, maybe he will waste his money. There are many more coins like One Coin in the market. Extracting profits from those types of coins can be very difficult and even possible to lose money. So without believing in all the coins, trade in Bitcoin, Ethereum. Then you will not be able to lose money and even earn a lot of money.Lots of coins will be dead. And Some of the exclusive coins will be created. Be safe .