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Install Apache

sudo apt update
sudo apt install apache2

Once apache installation done — run this commands

sudo systemctl stop apache2.service
sudo systemctl start apache2.service
sudo systemctl enable apache2.service

Install PHP 7.3

sudo apt-get install php7.3

if any confirmation comes — select Yes.
Install few necessary extensions

sudo apt install php7.3-cli php7.3-fpm php7.3-json php7.3-pdo php7.3-mysql php7.3-zip php7.3-gd php7.3-mbstring php7.3-curl php7.3-xml php7.3-bcmath php7.3-json

Once done — restart the apache server

sudo systemctl restart apache2

check php version installed using

php -v

Install MariaDB

sudo apt install mariadb-server mariadb-client

once done — run this commands

sudo systemctl stop mariadb.service
sudo systemctl start mariadb.service
sudo systemctl enable mariadb.service

Setup the installation

sudo mysql_secure_installation

When prompted, answer the questions below by following the guide.
Enter current password for root (enter for none): Just press the Enter
Set root password? [Y/n]: Y
New password: Enter password
Re-enter new password: Repeat password
Remove anonymous users? [Y/n]: Y
Disallow root login remotely? [Y/n]: Y
Remove test database and access to it? [Y/n]: Y
Reload privilege tables now? [Y/n]: Y
Once done restart the service

sudo systemctl restart mariadb.service
sudo systemctl restart apache2

Now you can run mysql

sudo mysql

exit;

Install Phpmyadmin

sudo apt install phpMyAdmin
Select apache2 on window pop up.
Configure database for phpmyadmin with dbconfig-common?
Select NO
Once installed run

sudo cp /etc/phpmyadmin/apache.conf /etc/apache2/conf-available/phpmyadmin.conf
sudo a2enconf phpmyadmin
sudo systemctl restart apache2

Then https://serverIP/phpmyadmin
Should work.
example: https://127.0.0.1/phpmyadmin