Hi
In the first time when you create the database in cpanel >> mysql >> Here you can click on the database which you are using for old site and click on the export button at the top and then go to new database and export the old file here and replace the site url from old to new.
https://flythemes.net/wordpress/how-to-update-database-url-by-using-sql-query-in-phpmyadmin/
Thank You
