The "Default Blog" template in the Shopify theme "Dawn" has a fixed number of blog post cards displayed per page: 6. Since you may want to increase the number of posts displayed at once, this is a setting example that allows you to set the number of posts displayed as you wish.
How to change the number of posts per page on the Dawn theme blog post list page

Step 2: Modify the code in “main-blog.liquid”

