OP, where do you have the Shiba stored, to start with? I believe it shouldn't be an exchange since you abhor them now after your supposedly bad experiences. Where, exactly? I'm not sure if Shiba has a private wallet at the moment (I couldn't find any on playstore, though). Nonetheless, if you're looking for a P2P kind of arrangement for the sale of your Shiba; I suggest you use an escrow. An escrow service will keep both the buyer and seller save from scam. The user above @GbitG has already provided you a link on getting escrow.
After posting escrow service provider's link I was also searching but have no any wallet about Shiba, so I am feeling these coins are on any exchange so better he can sell them and try to withdraw his USDT amount easily because here first he needs to search some buyer then having escrow and after this all still withdraw from exchange after paying some good withdraw feed is hassle for OP but still he is in better position to handle this all.