@Anonymous User: Briefing is just a news app that allows you to pick your favourite outlets and topics and receive all the latest news. Uninstalling this app won't have any affect on your device. Samsung Checkout is a dedicated payment service used in things like the Galaxy Store, so disabling this app might be problematic with regards to making in app purchases. Secure Folder provides an extra layer of security for apps and files, allowing your to password protect anything you add to it. Disabling this won't affect anything, but leaving it in place is recommended IMO.
@Anonymous User: Apologies. It seems as though the Briefing app is encoded into Android 9 on the S10, but the app isn't accessible. If you're interested, try looking in the Galaxy Store for a downloadable version, or check out Google News which offers a similar experience. The Checkout app can be used to make purchases on Samsung Smart TV's as well.