How to filter out scammers when posting ads on Binance

This must be a very difficult question to answer.

I used to post ads on Binance P2P in GBP and made a lot of money off of it after a long period of time. I noticed that a significant number of people I trade with don't have 'ethnically British' names. Now this can be expected in a multiethnic society like Britain. I noticed that a significantly large number of people I trade with have African names. Then something happened: someone sent me money from an account in a British woman's name (the Binance account also had the same name). My payments company contacted me about it, and after very, very long conversations, I was able to find out that he was a Nigerian scammer. And I was able to find out that many Nigerians defraud British women by 'online dating' them and then asking for money, which they transfer to themselves using Binance P2P. (I also got my payments company account banned, which I was able to get unbanned after a lot of effort). I had already noticed that these people can't speak proper English. Some of these people who couldn't speak proper English had Sri Lankan names too, and some other ethnicities. The problem is, after very long conversations with the scammer, I found out that these people actually live in Britain, and they have British bank accounts.

I want to keep making money with the legitimate trades, but I want to filter out the scammers. I tried out a (spectacularly bad) idea. I made a condition that I will only trade with people with names that are 'ethnically British'. That was just so hard to phrase, because you know Britain is multiethnic. And then what happened was what I was apprehensive of: I ended up sounding like a racist. One person with a Hindu name pretty awkwardly had to have conversation with me in which I asked him to prove his English skills. And only then I dealt with him. Another person (ethnically English) treated me the way I should have been treated with those terms: like an ignorant racist (I asked him to prove his English skills too).

Anyways, here I am. I want to keep making money by trading on Binance P2P. And I don't want to be part of any scam, don't want to make money unethically even if I never get caught and never have to suffer any worldy consequences for it. And I have no idea how to filter out the scammers. Since the scammers are actually in Britain, can't check British IDs. Can't ask for only 'ethnically English' names because that makes me sound like an ignorant racist. No way to check English skills. Really have no idea how to filter out the scammers.

If anybody here has an idea, please help me out.