If your website is hosted elsewhere and you would like to migrate it to Hostinger, you can learn about the requirements and procedure here: How to migrate your website to Hostinger.
In case assisted migration isn't available or you prefer a manual approach, you will need a backup of your website files and databases. To make the process easier, we have prepared guides for some of the providers:
For cPanel/WHM, see the official documentation: Backups for cPanel.
Alternatively, you can try searching on your hosting panel for backup options, or work along with your current hosting company staff to solve it.
Once you have downloaded the backups to your local device, you can upload your files and databases at Hostinger.