I can't open my facebook - Facebook Social Network

Facebook has become a daily or near-daily habit for many people all over the world: People spend more than 700 billion minutes every month on the site, talking to friends, playing games and sharing information. While signing up with Facebook is simple, sometimes accessing an existing account can prove to be problematic. This can occur for a variety of reasons.
1.Incorrect Password
Facebook users who attempt to log into the site with an incorrect password will not be able to access their account until they go through the password recovery process. Users can recover their Facebook password by clicking the "Forgot Your Password?" link underneath the password login field. Users must enter their Facebook email address, linked mobile phone number, Facebook username, or their name and a friend's name. Following information entry, users can click the "Search" button to identify their account and have the password reset to a new password of the user's choice.
2.Incorrect or Forgotten Email
Facebook users who provide an incorrect email address will be unable to log into the site. Since an email address must be entered exactly as it appears on the email account, including any capital or lowercase letters, numbers and special symbols, an incorrect email login may be as simple as an accidental lowercase letter or a forgotten underscore. Facebook users should check their email address to ensure that no mistakes of this nature have occurred before login.
If a user has forgotten the email address used for their Facebook account, Facebook suggests the following options for email address recovery: Try to log in with a username if one was registered, try to log in using a mobile phone number if one is linked to the account, try locating the account on the "Password Reset" page, or ask a Facebook friend to view the account and find the email address listed on the profile. If none of these options work, Facebook suggests using any option on the "Recover Your Account" page.
3.Cache Or Cookies Problems
Facebook users who are unable to log in may be having a cache or cookies problem. To fix these type issues, users should clear the cache and cookies on the computer or mobile device, enter "m.facebook.com" as a URL rather than using previously established bookmarks or links, then log in as usual.
4.Account Disabled by Facebook
Facebook seeks to keep its site populated with real people, rather than fake profiles. As Facebook states, "Since accounts that impersonate anyone or anything can damage the integrity of this environment, Facebook doesn't allow fake profiles for celebrities, pets, ideas or inanimate objects." If your profile is deemed to be a potential fake profile, the account may be disabled by Facebook. When this occurs, the user will get a message upon attempted login that provides a link to the "Confirm Your Identity" page. This page provides possible reasons that the account may have been disabled. In some cases, it is due to the user not confirming an identity via a phone number.

I hope you find it very helpful. Best regards.