Where can I sell my USDT?

Could you please guide me on where I can sell my USDT? I've been looking for reliable platforms to trade my cryptocurrency holdings, but I'm a bit overwhelmed with the choices available. Are there any specific exchanges or marketplaces that you would recommend for selling USDT? I'm also concerned about security and transaction fees. Could you provide some insights on these aspects as well? Thank you for your assistance in this matter.