Meeting in person to complete buy/sell transactions for cryptocurrency is a very bad choice. This really violates your privacy concern. Not only you are just showing your face, you are letting them know that you own cryptocurrency. And if they can track you to your house somehow, it's game over for you. This puts your life at risk.
And if cryptocurrency is illegal in your country, then good luck, mate. The law enforcement can always put up a trap in order to just catch you. I know KYC is a bad thing and this also expose your identity to the public if there's ever a data breach. But at least you are safe in your house. Many shady things could happen in face to face transaction, this has to be the number one reason for you to not use it. At least I won't use it.