Hello. There is a solution to rename your phpmyadmin public access url i if you exposed oryou accidentally post your phpmyadmin public access url like aapanel forum.
In order to modify phpmyadmin public access url, you need to rename your phpmyadmin folder. Go to /www/server/phpmyadmin
Once your renamed your phpmyadmin folder. It will automatically updated the phpmyadmin public access URL.
With this method, public access URL is now secured.