Because Your Device Is Too Old And It Was Launced in India In 2020 With Android 10(ONE UI 2.X) And Promises To Give Two Years Of OS Update And 3 Years Of Security Update.It Has Already Got Two OS Update i.e.android 11(ONE UI 3.X) And ANDROID 12(ONE UI 4.X) And Has Got Security Patch Updates Till End of 2023.Therefore The Duration For Update Has Completed
