I do not remember my password and it asked me how do you log into your Facebook account I do not remember the last time if I use my Gmail account or if I used the Facebook account and when it sends me the code it says that it is the incorrect code
Have you contacted Facebook? You're able to send them an email or a way of connecting with them over the situation. I think you get an incorrect code because that's not the email address attached to your account.
Facebook is the only place where you can get your answers go to this link https/www.facebook.com/help/ and definately your problem will sort out, this is the url specifically develop to solve facebook issues