Welcome to Android Central! If the widget you want isn't available in the current version available in the Play Store, then the Note 3 is probably using a much older version that is no longer available. You'd have to look for an APK file of that older version, but it might be hard to find one that's so old. APKMirror is a safe site to look -- be careful with others, since they tend not to vet their files for malware.