I'd do anything to know how fb is doing this!

I'm really bummed out about this. Pissed actually. How is fb able to deanonymize me when...

1. I created an account on it with a pseudonym on a public computer with the sole purpose of browsing the marketplace. So no friends and completely blank profile.
2. I used a burner specifically for this account.
3. Didn't install the app on my phone but rather the pwa.
4. I have no non-foss apps on my phone.
5. I use only mobile …

account browsing burner computer doing friends marketplace privacy profile pseudonym public