Hello, to minimize risks, you need to choose a service with a period of operation of more than six months. The site must be listed in large monitoring. Exchangers with a large number of negative comments are promptly deleted. Each exchange office sets its own exchange rate. They are included in the rate and when the user places an order, the system will give the exact amount that the client will receive. The difference between quotes in different services can reach 5-10%. All other things being equal, it is better to choose an exchanger with minimal fees. But you should not work on a site with too favorable rates. This may indicate fraud. The application process in most exchangers is as simple as possible. The user enters only the necessary data and receives payment in 5-10 minutes. But there are services that work differently. To execute an order, you need to go through verification, confirm physical possession of the card or talk to an employee on the phone. This slows down the conversion of funds. I can say that at present one of the most convenient and reliable is the crypto exchanger at
https://www.trustchange.com/. This service has a good license, so you don’t have to worry about the security of transactions, and it also offers very favorable conditions for exchanging cryptocurrency.