Lies can be interesting vehicles within storytelling. When you think about it, lies are just mini stories as fabricated by the teller.
Try a couple of these:
1. Write a scene where a child tells a lie to a parent or teacher. What is the motivation? What is their reason for the lie? In their eyes, why is it necessary?
2. Write a scene where a friend lies to one or more friends. What are the consequences if they don’t tell the lie?
3. Write a narrative where the entire scene is written in dialogue. The main character tells a lie and is caught. How do they (if they do) talk their way out of it?