Thank you for the link.
Which exchange from the list uses USDT TRC20?
I agree with other comment, and this applies if you are looking for a market where tokens are sold, in the OP's case, namely Nexa, because this token is already listed on CMC, then look for the market there. If I look in coinmarketcap, try Mexc to sell your Nexa. Now, Mexc don't has KYC to withdraw and It's better if you choose in below list in CMC like coinEx, Xeggex or etc. If you can see red sign in cmc, I think it means deposit or withdraw not available. I don't check it but actually I often like that.