Usually, FTP is used to upload data to the hosting. To do this you need an FTP client on your local computer. At the moment there are many programs that support the FTP protocol, including FileZilla, TotalCommander, SmartFTP, CoreFTP and others.
We recommend using FileZilla, as it is free, cross-platform and various vulnerabilities are regularly eliminated. You can download it from the link for your operating system. Next we will explain how to use ftp accounts and clients. Also, you can use the file manager built into cPanel to fill files.