So, if a used car dealer convinced me that my car isn’t worth much, and gets me to sell it to him for cheap, and then resells it for twice what he paid, I can t

So, if a used car dealer convinced me that my car isn’t worth much, and gets me to sell it to him for cheap, and then resells it for twice what he paid, I can then sue him for defrauding me? Or does it only work if he sells it to the National Gallery? Or does it only work that way if you’re a multimillionaire and politically connected? Trying to understand why this is any different, and why the elites are protected but I’m getting offered $500 for my BMW, and it’s ok.