sadly this is the problem that i am also facing, in my country there is no place (exchange) to sell my coins to the real value so i lose money two times 1 on exchange of bitcoin to $ which they buy lower price and 1 on exchange of $ to local currency which then again they buy lower.

the only way is either finding a way to do it on an exchange site if you can withdraw money from them to your bank or online wallets (check out c-cex it has many options) or finding someone who has fairer prices.