After the Cambridge analytica issue, Facebook hardened their
security & trust protocols and also terminated 1.3 billion fake accounts through their internal algorithm reports! What you can do is simply appeal via
Facebook Help Center | Facebook
Fill your details and explain very clearly about your issue in the "additional info" section and submit the relevant
ID proof to verify your account ownership.
You will get response within maximum 72 hours ( normally they reply within 24-48 hours)
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