Choose between 3 types of pagination style. You can find that option through Admin Dashboard > Appearance > Customize > Blog > Blog Archives (General)
1. Default: An ordened number list with links and prev/next arrows.
2. Load More Button: Append more posts to the list when click in the “Load More” button, without the need of load a new page.
3. Infinite Scroll: Append more posts to the list when scroll position is after the last post in the list, without the need of load a new page and click in a button.
Important: The post navigation is displayed when the number of posts registered in your database is greater than the number of posts defined at Admin Dashboard > Settings > Reading > Blog pages show at most.