Bitcoin and all other crypto currencies out there are form of virtual currency that you cannot hold them in your hand. You can only use them online for shopping and buying different products. But how you can convert them into cash, for this you need an exchanger that solves your problem if you are from Pakistan then you can use Kukichanger to sell bitcoin in Pakistan because its trusted and you can get your cashout with in few minutes. Also livechat and whatsapp support is amazing you can contact them directly.