I am sorry to hear you are not getting updates, and can understand the concern and confusion. Software updates are like oil changes and tune-ups for your phone or tablets - they keep things running smoothly. They also help improve the user interface, enhance security, and remove minor bugs. We recommend updating the software whenever a new version is available so you can make sure your device stays in tip-top shape. Use this article for ways to update your phone: https://www.samsung.com/us/support/answer/ANS00077582/
If it still says it is up to date, it would be best to check with your carrier, as they control the rollout of updates to you.
Please let me know if this helps.