Download TOR browser and go to tor.taxi or dark.fail and find a market that shipps to your country. Also watch tutorials on how to use PGP to encrypt your address when buying. This is the single most imporant things because only the seller can encrypt your address. Even if they bust a darknet market they still would need to bust the seller and the seller would have to give his password to the law enforcement so they could encrypt your address to know you bought. And this only works if the seller keeps your address which is stupid because it is evidence that they sold drugs. I recommend Incognito market and use this PGP software:
https://www.gpg4usb.org/
Add the public key of the vendor on their site and encrypt your address with their public key and send the gibberish in the address field of your order.