How To Install LAMP on Ubuntu 18.04 LTS

Install Apache2

apt install apache2 apache2-utils libapache2-mod-php

Install MySQL

apt install mysql-server

Install PHP

apt install php-fpm php-mysql

Install PHPMYADMIN

apt install phpmyadmin

Error #1698 - Access denied for user 'root'@'localhost'
$ sudo mysql -u root -p
$ ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'new-password';
$ sudo service mysql restart