There are several exchange in the market which are good to use to trade, and one of these are Kucoin, Idax, Bitforex, coinbene, and
okex. But you can do your own research or you can check the top exchange at the coinmarketcap anyway.

I am also involved in Options trading I have been demoing on Spectre.ai Platform while planning to deposit they only accept ethereum and their token deposit while KYC is mandatory they have varieties options of trading while you them check out although USA citizens are restricted.