Switching from hostinger to IF

[ChrisPAR]

WordPress has its own documentation for moving sites:

Moving WordPress

As for updating wp-config.php, the information is in the article already linked to you by @JxstErg1:

@Admin

(For example, WordPress will have a wp-config.php file) of your PHP script and update database host, database name, database username and database password values. The database hostname, database name and database username can be found in your control panel. The database password can be found in the client area. Note: we do not use “localhost” as the MySQL hostname, the right value should look like “sql123.epizy.com ”.