How to exchange Bitcoin if you don't have fiat currency. Some countries prohibit the use of cryptocurrencies, restrict Bitcoin, and people can only use legal tender. In terms of payment methods, people usually use legal currency to pay. Most bitcoins are used for investment and storage.
Governments can't really prohibit the use of cryptocurrencies because "using" them is no different than sending messages through the Internet. If you have the freedom to express your opinion with verbal tools, you should also have a right to express your thoughts through electronic means. Money is a language with which to communicate prices and values of different things. Fiat currency is considered to be the "official" language of the country, but cryptocurrencies are a way to say the same using other letters and sounds; the meaning of the message remains exactly the same. You shouldn't be beaten just for speaking the unofficial language; you should be allowed to express your opinion using whatever means you see fit; if this is not the case, then you live in a totalitarian country with a government that respects neither the citizens nor their natural rights.