A lot of WordPress backup plugins have limitations and are just pushing you to purchase the pro version. That is why I always recommend cperforming a manual backup of WordPress websites, whenever you can.
How to do manually backup WordPress:
How to Manually Backup WordPress Files using cPanel File Manager
Open File Manager and create an archive of all the files in the root directory.
You can also create a backup by FTP via a software such as FileZilla.
How to Manually Backup WordPress Database using cPanel PHPMyAdmin
Step 1. Login to PHPMyAdmin
Step 2. Select the database
Step 3. Export tables
Step 4. Finish Export