Step 1: Download the most recent version of WordPress to a location of your choice at WordPress.org
Step 2: Upload and extract the WordPress.ZIP file to your desired installation directory.
Step 3: Move files from the WordPress folder back into the directory root.
Step 4: Create a database and database user
Step 5: Populate the wp-config.php file with your database information
Step 6: Replace default Unique Keys and Salts
Step 7: Rename "wp-config-sample.php" to "wp-config.php"
Step 8: Run the WordPress Installation Script
source: https://aspengrovestudios.com/how-to-manually-install-wordpress/