After more digging, I found that if you install Jetpack (even on the free level), you can enable Infinite Scroll – which the theme has to support, but many do now
The theme I'm using right now (Pen) required a theme plugin to use infinite scroll, but otherwise didn't end up needing to change themes
January 28, 2020 at 09:32PM
via reddit https://www.reddit.com/r/Wordpress/comments/ev8vn0/trying_to_find_an_infinitescrolling_theme/ffvitop?utm_source=ifttt