It's important to back up your data on a regular basis.
To create a complete backup of your website using cPanel, refer to this instructions.
1. Log in to your cPanel account.
2. In the Files section, click on Backup.
3. Under Full Backup, click on Download a Full Website backup.
4. From the drop-down menu, select the backup destination as Home and enter your email address in the email field to receive a notification when the backup is complete.
You will be notified once the cPanel backup is complete. You can download backups from Backup > Download a Full Account Backup.