When you want to post you trade on localbitcoins. You need some amount of bitcoin in your LBC wallet along with you need to share the ID documents and phone number to verify there. If you want to sell your bitcoin to some trader in your location also you need to the get verified if the concern trader have the rule to verify the doc before open the trade.
If you verify your document with LBC you will not be shared to anyone mate. Please do not sell or buy bitcoins in your country's local exchanges.