Well, id you are having trouble, do 2 steps from start.
1) GO to you cPanel (or whatever u r using) and create a new DB with necessary details. (DB name, DB User, PWD)
2) Locate wp-config.php file in your webserver root and delete it. Now, take wp-config-sample.php file from your wordpress folder, change all required details in it, rename it to wp-config.php and upload to your server.
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