Facebook Account Closed After Selfie Verification for Community Standards

My Facebook account was suddenly closed today. Before this, some pages I managed were deleted, I appealed and they were reopened. Now my personal account was first suspended and I was asked to upload a selfie for verification. I completed this step, but right after that I received a notification that my account was closed on the grounds of violating Community Standards, and I can no longer access it. I believe my account was closed unfairly and I have important personal information, connections and managed pages there. I request that my account and all the pages previously associated with it be reviewed again in detail and reopened, or that I be clearly informed about the real reason for the closure if there is a specific content or action that caused this decision. I kindly ask you to urgently re‑activate my Facebook account, restore my access and give back my pages.