Looking for logging into the Main Facebook site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Main Facebook site. After that you can login as usual with your login credentials.
https://www.facebook.com/about/login
https://el-gr.facebook.com/login/
https://www.facebook.com/
https://www.facebook.com/login/identify
https://books.google.gr/books?id=_o9SAwAAQBAJ&pg=PA230&lpg=PA230&dq=main+facebook+login
https://books.google.gr/books?id=ndAtd9KzZpsC&pg=PT359&lpg=PT359&dq=main+facebook+login
https://medium.com/flutter-community/flutter-facebook-login-77fcd187242
https://medium.com/mindorks/facebook-login-in-android-app-160cdf6aa08c
https://knowledgebase.constantcontact.com/articles/KnowledgeBase/6069-find-the-url-for-a-facebook-profile-or-business-page?lang=en_US
https://books.google.gr/books?id=r4dyHghtso8C&pg=SA7-PA1&lpg=SA7-PA1&dq=main+facebook+login
https://help.kickstarter.com/hc/en-us/articles/115005126974-How-can-I-log-in-using-my-Facebook-account-
https://books.google.gr/books?id=2vDcBAAAQBAJ&pg=PT178&lpg=PT178&dq=main+facebook+login
https://customer.real.com/hc/en-us/articles/205522268-Change-login-from-Facebook-account-to-email-address