In order to access phpMyAdmin directly from:
http://yourdomain.com/phpmyadmin
you need to install phpMyAdmin on your hosting account. This way you
won’t have to first log in to your cPanel when you want to use
phpMyAdmin.
Follow the steps below to complete the installation:
1) Log into your cPanel account
2) click on 'softaculious'
3) search for 'phpmyadmin'
4) follow on screen instructions to install phpmyadmin on your hosting account.