How to create a google web page map

https://open.substack.com/pub/axminsuhft/p/web-optimization?r=78v3do&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

How to create a google website online map<br/>A instant search on Google for guidance on growing a domain map at the beginning threw up many links to application that you must buy or down load free of charge to create a site map