Hi there! I understand you’re experiencing difficulty making a public Facebook post. Let's see how we can resolve this together!

1. Check Privacy Settings: One of the most common reasons for this issue is that your Facebook profile is set to "Friends" or "Private". You’ll want to change your privacy settings to “Public.” To do this:
- Open the Facebook app.
- Tap on the three horizontal lines in the bottom right corner.
- Scroll down and select "Settings & Privacy," then tap on "Settings."
- Under the “Privacy” section, look for "Profile Privacy" or "Who can see your future posts?" and set it to "Public."

2. Post Privacy: When you are about to create a new post, there should be a small icon under your name where you can pick the audience for your post. Ensure it's set to "Public".

3. App Permissions: Make sure the Friendly Social Browser app has the necessary permissions to post on your behalf. You can check this within the iPhone settings:
- Go to “Settings” on your iPhone.
- Scroll down to find the Friendly Social Browser app and check if it has permission to access your Facebook account.

If you've already tried these steps, we can dive deeper into account settings or consider potential app-specific issues.

Are you satisfied with the solution I provided, or would you like to explore further options?