Embedded SIM, or eSIM, is a SIM card that is programmed into a phone without having to be manually inserted. It acts similarly to a traditional SIM card, but it does not require a physical card and can only be used on devices that have pre-installed eSIM compatibility.
Sorry, Xiaomi Mi A2 Lite has no eSIM support yet. You have used a physical SIM card on it. There is no pre-installed program on it to support eSIM.