Hello, currently there are several ways to legally and safely buy, sell and exchange digital assets. Each crypto exchanger has its own rate, commission and operating conditions. You should not choose the first service you come across. In this case, you risk falling into a trap of scammers and paying an unreasonably high commission. The security of the transaction depends on the legality of the exchanger. That is why its choice should be taken very seriously. Choose a safe and reliable cryptocurrency exchange site, the rating of crypto exchangers will help you conduct profitable transactions.