I can advise you to use BestChange for choosing the best conditions for convert bitcoin to cash. Here https://www.bestchange.com/bitcoin-to-dollar-cash.html you can find offers of exchangers and find answers to questions about how can you convert bitcoin to cash. BestChange monitors exchange rates in several hundred reliable exchangers and equips you with all the information you need to select the best exchanger to transfer your money

There are special online services for this. You can study the reviews of those who have already converted to choose a more optimal option