What's the point of avoid a trace from exchange, but you're expose your face, appearance, voice, location etc to a complete stranger? not to mention he could ask his friend to watch you and find your home. I would rather to use centralized exchange than direct P2P, it's really dangerous, but since there's a decentralized exchange, I don't need to use centralized exchange.
The is no option among them all that a trace can be avoided, even on a decentralized exchanges, if you want to sell bitcoin, the buyer will ay into fiat or fiat related account which are traceable. But meeting face to face is no what I can recommend. Centralized exchanges are not recommended for privacy reasons because the centralized exchange and the government knows everything about you and the exchange can be hacked and your personal information can be known by hackers which can be sold, they are the worst of all. I prefer decentralized exchanges because they are e the one that still preserve privacy the most.