@Siva bro, can you please try the following -
Unhide Home Screen Page
If you’re able to fetch the app through Spotlight Search and App library but can’t seem to locate its icon, it’s possible that you might have hidden the Home Screen page containing that icon.
To unhide your Home Screen, tap and hold anywhere on the empty space on your Home Screen. Now tap on the dots at the bottom to edit your Home Screen pages. Make sure all the Home Screen pages are ticked and tap on Done.
Source:
10 Best Ways to Fix App Icons Disappeared From iPhone - TechWiser