Hello, for this I can recommend you the crypto exchanger trustchange com. This is an intermediary platform between the seller and buyer of cryptographic currency. It provides security when transferring money in both directions. With its help, you can exchange cryptocurrency for hryvnia, dollars, euros or vice versa. For each operation of the site they take a commission. It is in the range of 1-10% and, as a rule, is already included in the established rate.