A lemmy instance won’t start federating until a user has searched for and subscribed to a particular community. So, taking a peek at your instance it looks like you’ve only subscribed to one local “Announcements” community.

This is where things need to get a little creative. On my instance I have an account whose sole purpose is to search for and subscribe to interesting communities to fill up my “All” tab. I then use my main account to focus on the communities that I want to interact with regularly. I wrote a little script to automate that, but it’s still pretty simple to do manually.