A buyer agent is like a grown-up friend who helps you when you want to buy something. Imagine you want to buy a toy from a shop but you don't know which one to choose or how much it costs. Your grown-up friend, who is a buyer agent, will come and help you with that.
They will listen to what your preferences are, like what kind of toy you want or what shape it should be. They will then search through all the toys available in the shop and recommend one that suits your needs. They will even tell you if the toy is worth your money or if it's too expensive.
Similarly, a buyer agent is a special kind of real estate agent who helps people buy houses, apartments, or land. They will listen to what you are looking for in a home and they will search for homes that meet your requirements. They will give you advice about whether the home is a good choice for you or not. Buyer agents want to make sure you are happy with your purchase and that you are not paying too much for your new home.
In short, a buyer agent is someone who helps you buy something and makes sure you are happy with your purchase.