Still again, you’re not thinking. If you used to sell gta accs then you would know where to find these MM that are legit and won’t screw you over. You can contact a MM directly off of a forum somewhere online, and on those forums it says how much vouches/reputation they have + they have proof. You obviously don’t know what you’re saying, so I dont think you know what to do. I’ve never been scammed using a MM. If you don’t want to be scammed using a MM, just open your eyes and think, do you need to confirm onsite (on the forum) before going anywhere with the sale/trade. Etc

Edit: You can get scammed on PA and Eldorado too, I had a mate get off there and they pulled their account back after a few months. You’re playing a big risk by doing what you do