This step is optional, you could include social media links or buttons to other pages in order to drive in customers. However, you could choose to keep your footer simple and just for contact and legal information.
Your footer is the place to provide users with details about your brand.
A footer should act as a robust extension of your main navigation, helping visitors navigate the site and find what they need to make a buying decision.
That's why you need to concentrate your design work on footer optimization.