Update (15/5/2022): the default Hub Homepage is now "All the Stuff you Like, Think and Do about Everything, Anytime...", so your HomePage will not be empty as soon as you publish your first item.
Original post follows:
The content you're creating is not showing up on your Home Page because your Home Page only shows Highlighted items. So click the star.
As set out FAQ: How does my Hub’s search and browse work?, your Hub's Homepage by default shows:
"The Best Stuff you Like, Think and Do about Everything, Anytime...": - ie the latest content you've Highlighted:
So if you've started creating content and you're not seeing it on your Home Page, you probably didn't Highlight any of that content.
You can Highlight an item by:
More Stuff I Do