How to sell Theta Wallet?

Could you please elaborate on the process of selling Theta Wallet? I'm particularly interested in understanding the steps involved, such as finding a reliable exchange platform, transferring my Theta tokens to the platform, and finally, converting them to fiat currency or another cryptocurrency of my choice. Additionally, I'd like to know about any potential fees or taxes associated with this transaction, as well as any safety measures I should take to ensure a secure and smooth sale. Thank you for your assistance in this matter.