If you prefer not to use phpmyadmin but you still don't want to use command line mysql client, you can use mysql workbench as your mysql client. In this article i will show you how to install mysql workbench on lubuntu.
You know what to do, open up your console/terminal/command prompt (simply by pressing CTRL + ALT + T on your keyboard), and then run this command to install mysql workbench.
sudo apt-get install mysql-workbench
Once installed you can find mysql workbench from the lubuntu start menu > Programming > MySQL Workbench, go ahead try it.
It's really up to you which one you want to use, phpmyadmin or mysql workbench, they both really powerful tools for managing mysql database.