As Facebook works differently than the rest of the social media platforms in that it uses Admin Access as opposed to separate business accounts, if you would like to change your email address, you have to change the email associated with your Personal Facebook Account.
Log in at www.facebook.com and locate and click the downward facing arrow at the top right portion of the screen.
Upon clicking a drop down menu will appear, locate and click “Settings”.
Upon clicking “Settings” you will be brought to a “General Account Settings” area.
Locate “Contact” and take note of your current primary email address, to the right locate and click “Edit”
Clicking “Edit” will open an editing window, locate and click on “Add another email address or mobile number”
Enter the desired Email Address, make sure that it is selected as your “Primary Contact”
Click “Save Changes”