How do I sell a crypto asset on trust wallet?

Could you please explain to me the process of selling a crypto asset on a Trust Wallet? I'm a bit new to this and would like to understand the steps involved, from selecting the asset I want to sell to the actual transaction and receiving my funds. I'm also curious if there are any fees associated with the sale and if there are any safety precautions I should take to ensure a smooth and secure transaction. Thank you for your help.