If you're a web designer, you have to talk to your client about a footer menu. Normally, the footer menu depends on how many pages the site has and the type of website you're creating. Whatever you decide, you should present it to the client as the best option or add it to the prototype, Most clients don't care and will respect your opinion since they are paying you to create a user-friendly website. Unfortunately, they are clients who see keyword stuffed footer menus, like service sites which list plumber in every community they serve, and think they need one too. Google likes useful content, not manipulative links.
Web designers usually put links to less visited pages in footer menus. You don't need links to the client's privacy policy and terms and conditions cluttering up the main menu. Giving visitors too many choices confuses them.
A duplicate footer menu, which also includes less visited pages not found in the top menu, is useful on sites which scroll long. People are lazy and may want to view another page without scrolling back to the top.
As a web designer, most of your creativity goes into the header and body because it is what visitors see first. Whatever is above the fold creates the first impression for visitors, but don't ignore the footer. It should contain a menu and your copyright notice and a way to call or contact the business because you can't have too many ways for someone to contact your client. You should also put a newsletter signup offer in the footer as well. Footers should encourage interaction. Local businesses should have a link to a map and a click-to-call phone number.
The websites you create should have custom footers based on your client's business goals. Every part of the website should advance their goals and make the site easier to use for visitors. For more information click here https://www.reddit.com/r/web_design/comments/fes7bc/many_web_sites_have_extensive_navigation_menus_in/.