First, I never wanted to see anyone in personal and do cash trades because it is highly risky as well as we are loosing our anonymity while doing such trades. I have been asked by multiple people to trade with them personally on LBC platform but I just simply deny them with no further questions.
If someone is willing to trade with physical cash means the source of that money is in big question because if they are legit tax payer they can simply use their bank account for safe trading.