Garena Free Fire Deleted My Facebook Linked Account After 2 Years of Inactivity

I have been playing Garena Free Fire since 2018, but I did not log into my Free Fire account linked to Facebook for two years. My last login was in 2022, and when I recently logged back into my Facebook account and tried to access Garena Free Fire, the account linked to my Facebook ID was gone. Instead, it showed a new Level 1 account. I was extremely worried because my Facebook account was never deleted, yet I lost my Free Fire ID. That account meant a lot to me, and I want it back. Can someone guide me on what to do to recover it? I am really stressed about this. Please help me.