I went through a similar experience a few months ago with my Facebook account. I got locked out because someone hacked it. Unfortunately, Facebook does not offer ANY customer service. There is no way to contact them for anything ever. The only option is to use the AI-driven online option. I had to submit proof of identification. I sent in my license only to quickly get an automated response that they were unable to use that to verify my identity and to try again. So I tried with my passport with the same result. Those are the only 2 forms of photo ID I possess so I was out of options. I tried the same thing a few times over the course of a couple of weeks, taking new photos and scans each time in case the image itself was the issue. Still no progress. I finally gave up and started a brand new account. I lost 15 years of history, photos, memories, and my friends list. I had to rebuild everything from scratch which was a little challenging because when I sent out friend requests, many people assumed it was spam since they were already friends with me. Thankfully, a few friends and relatives posted to let our mutual friends know the requests were legit but 4 months later I'm still trying to reconnect with some people. And all of the memories are gone for good.