You can click on the settings and you will see updraft backups.
Then you will see a backup button. Just click on it
Then you will get a pop-up asking you what you want to backup. Just click on all the checkboxes. (You can check the below-given screenshot)
Wait for some time till your website is getting backed up. Then you will see your website backup at the bottom.
You need to click on Database, Plugins, Themes, Uploads and others. This will fetch the file from the server so that you can download it. You need to download the files to your computer.
That’s it! You’ve successfully downloaded the backup of your website on your computer.