Its has been several threads about this problem and few toggles are mising for me too.
Samsung support said, its 2 apps that are casuing it. 1 is Samsungs TTS update and either I dont know. Either factory reset, it will bring back all the toggles and disable Galaxy Apps updates. Or wait for Samsung to fix the bug with new OTA update.
I choose to wait, dont want to go through all the setup again.