Link: Make a custom home page
Micro.blog Help has instructions for making a Custom home page:
Custom home page
Setting static text for your home page.
By default, Micro.blog shows the most recent posts on your blog’s home page. You can override this by creating a custom theme with a different home page layout that includes any text.
Read the instructions: Custom home page Setting static text for your home page. Published May 15, 2019.