[ls15]

You'd need to find people/businesses who are willing to accept crypto in exchange for goods or services, and if that is not an option, you'd need to exchange crypto for local (or another accepted) currency.

If your government tries to stop you from doing that, it is of course much harder, but not impossible, since decentralized exchanges such as Bisq would be an option, as well as LocalMonero or regular old black markets, assuming that you have coins that someone is willing to pay for.