You may benefit from a stint as a MM. Perhaps your theoretical knowledge would be greater than a rank-amateur as a result. You seem envious.
BTW, I am NOT a MM. And never visited nor do I intend to visit an exchange. Believe us, it shows.
I know of no exchange traded option. In Europe we have a variety of FX dealers in vanilla and exotic options. The option would be priced in SGD.
Saxo offers trading in spot, but not USD-SGD options.