I think these are more specific means of exchanging bitcoin for actual cash. It would have been better if you had explained the stages or steps to doing it, just as you made mention of the steps. Normally, anyone who knows how to buy Bitcoin also knows how to exchange it for cash, so you can't count 2 before 1, it's always 1 before 2. Your topic would have made more sense if you had explained the full details of how to buy and how to convert to cash. Among all the method you mentioned, I think the charges associated with using a Bitcoin ATM are usually higher than on other platforms (not sure though).