You have two options if you really want to buy bitcoin using your fiat money. First, you should look for an exchange that accepts fiat in your country and a local exchange is the suitable one if it is available there. But if not, your second option is to look for a legit dealer that wants to exchange their bitcoin to your local currency.

Though the second one is a little bit risky as there are many scammers out there, so what I can suggest is either you should meet up or you proceed with a legit escrow if you found someone who is willing to deal with you.