"Apple built in apps gets reinstalled: I bought 16 pro max 3 days back and then i deleted apple built in apps like keynote , garageband, pages , numbers etc because i dont use them and now suddenly yesterday those built in apps gets reinstalled suddenly without me doing that manually why is that ??"
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Builtin Apps cannot be Deleted.
You likely updated your device (intermittently), and they reappear. They would be in your App Library.
Finding Apps:
A. Swiping Finger:
To see your App Library, swipe you finger down from the top-right corner of the screen towards the bottom-center. then, drag these items to the Home Screen.
B. Reset the Home Screen Layout:
If widgets are not working as they should or have gone missing somehow, then you need to reset the Home Screen Layout...
Go Here: Move and Organize Apps on iPhone - Apple Support. IMPORTANT: You'd have to add back all the widgets that you can recall being back on there. So, write down what is currently on the Home Screen, or take a screenshot of each Home Screen.
Scroll to: Reset the Home Screen and Apps to their Original Layout
- Go to: Settings
- Tap: General
- Tap: Reset
- Tap: Reset Home Screen Layout
- Then... Add the apps back