The Community in more languages
Now the forum welcomes more languages.
You'll see a green translate button in comments and discussions to turn them into English
Hello, Ms Newbie,
Welcome to the forum! 👋
If the apps are any similar, you need to log out of your Facebook profile in your FB app. Might as well just uninstall your FB app. Make sure you're not logged in on your mobile browser. Then log out of your game account and attempt to sign in again via Facebook. It will then let you enter different FB account details.
See here for reference, although it's about Apple users but you can apply it to suit you:
Game keeps connecting to the wrong Facebook account
Good luck! 👍