Howtoforge published a guide about installing phpMyAdmin with Nginx and Let's Encrypt SSL on Ubuntu 20.04 LTS.
How to Install phpMyAdmin with Nginx and Let's Encrypt SSL on Ubuntu 20.04 LTS
phpMyAdmin is a free and open-source application that can be used to manage MySQL and MariaDB database through a web-based interface.
How to Install phpMyAdmin with Nginx and Let's Encrypt SSL on Ubuntu 20.04 LTS