Looking into the SQL Database, I was unable to find ANY users.
So, I followed these instructions (to create a new Super User) (but still can't log in).
Login to phpMyAdmin.
Select the database that is used for your Joomla website. You can know which database is used on your Joomla website by checking the $db value in the configuration.php file.
Click on the SQL tab, and then run the following queries (replace #__ with your database prefix, which is the value of the $dbprefix variable that can be found in your configuration.php file WHICH I DID):
INSERT INTO `#__users` (`id`, `name`, `username`, `email`, `password`, `block`, `sendEmail`, `registerDate`, `lastvisitDate`, `activation`, `params`, `lastResetTime`, `resetCount`, `otpKey`, `otep`, `requireReset`) VALUES (1000000, 'tempsuperuser', 'tempsuperuser', 'youremail@yourjoomlawebsite.com', MD5('temppassword'), '0', '0', '0000-00-00 00:00:00', '0000-00-00 00:00:00', '', '', '0000-00-00 00:00:00', '0', '', '', '0');
INSERT INTO `#__user_usergroup_map` (`user_id`, `group_id`) VALUES ('1000000', '8');