Some examples include:
• Using a fake name or not using your full real name.
• Creating two accounts.
• Impersonating someone
• Continuing behaviour that's not allowed on Facebook by violating the Community Standards
If you think your account was disabled by mistake, you can appeal Facebook's decision, in your appeal, you must prove that Facebook made a mistake. Saying that you are sorry, that you did not know, that you will not do it again will be useless.
From your readings find why possibly your Facebook disabled your account. If you know for certain that Facebook made a mistake appeal to Facebook. Again. saying that you are sorry, that you did not know, that you will not do it again will be useless.
To appeal, use this form, preferably attach a copy of some kind of id with just your full real name and photo.