Without anyone knowing your name or address?
actually if you want to have this level of privacy, then i have bad news for you as almost all ways will need either your name, your bank info or your adress i think
you can meet with someone in real life and sell bitcoins to him, or you can buy steam games and then sell to someone, though these ways aren't best one that you can do
Most of the countries dont have local shops where you can cash out bitcoins. I would prefer localbitcoin site to find the buyer from your country and then selling him. If you dont want cash, you can directly purchase goods online and this could protect your privacy also.