I avoid doing business with some I know, because you tend to trust them too much and that is a very easy way for them to scam you or sell something that is stolen to you.
So what's your priority option, doing business with random guys? I think this is the opposite of what most people do. Dealing with people you know isn't about trust; you simply have a greater chance of recovering your losses because you can identify them better.
Did you mean trading bitcoin with someone you know is better than someone you don’t know? If that is what you mean, then I will tell you that you are even trading bitcoin the wrong way. Nobody is against reading with an unknown person, but it is not safe, or buying or selling physically. That is wrong, as it’s always done easily. The best is to do it that way.
Buying from centralised or decentralised exchanges is even easier than all this physical P2P because we all know it won’t work at the end, and another person will know how much you are worth in crypto, which is supposed to be private.