Hi @TapTap21 
Ah yes. I need to improve the docs on this!
You need to redirect to a public page because that’s what allows WeWeb (or any frontend for that matter) to read the cookie from the external provider before it gets the user:
If you redirected directly to a private page, the authentication would fail.
For your use case, your public page can be blank with a workflow triggered On page load (before fetching collections) to redirect the user to a private page:
Here’s the replay of a live stream we did on the topic of OAuth in case you’re interested in learning more about the process 