There are many exchangers already. And each exchanger can offer different conditions and rates for the exchange. Therefore, in order not to waste a lot of time, I use the BestChange service. Here you can quickly find profitable offers using the search engine on the site. It just works. You need to enter a currency pair, for example eth to usd, and you will receive such a list https://www.bestchange.com/ethereum-to-visa-mastercard-usd.html