Use tools like Bitwarden or 1Password to generate and store unique, complex passwords for every site, preventing a breach on one platform from affecting your Facebook account. Signs of Account Compromise
Hackers use Google to search for exposed files on poorly secured websites that list usernames and passwords in plain text. If you’ve reused your Facebook password on a smaller site that gets indexed, your Facebook account is just one search away from being compromised. How to stay out of the index: Length > Complexity: index of password facebook better