Are you trying to install phpMyAdmin on Ubuntu with a WordPress site installed on the same server? However, having issues accessing the /phpmyadmin URL?
Installing phpMyAdmin on Ubuntu with preinstalled WordPress
If you’ve installed WordPress onto your Ubuntu server and need to access the https://your-ip-or-domain/phpmyadmin/ URL, you should follow the below steps accordingly.
sudo apt update sudo apt install phpmyadmin php-mbstring php-gettext sudo phpenmod mbstring sudo systemctl restart apache2 sudo ln -s /usr/share/phpmyadmin /var/www/html
Note, the last line is the one you need, should the https://your-ip-or-domain/phpmyadmin/ URL not work.