Why do I need to use a personal Facebook account?
TLDR? This is the way Facebook verifies you for security purposes.
The connection to your Facebook Pages and Instagram Business account is made through your personal Facebook account.
Since Instagram is owned by Facebook, Meta now requires that any connection to an Instagram Business account must go through a Facebook account that’s an administrator of the linked Facebook Page. The same applies when connecting a Facebook Page.
We only use this connection to access your posts — nothing else. We can’t see your personal posts or any private information beyond your name.
To set this up, please go to the Account Connections page and add Instagram Business and/or Facebook connection. You’ll see your personal Facebook account name appear next to the connection once it’s linked.