If you're still on FB, you might check for what "off facebook activity" they've recorded on you: https://www.facebookcorewwwi.onion/off_facebook_activity
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re: facebook
A good step, but "this tool doesn't come close to covering all the ways Facebook collects and monetizes data about you":
https://www.eff.org/deeplinks/2020/01/facebook-history-welcome-incomplete-move
