How to Hide Apps using the iPhone Search option
Uninstall apps on your Apple iPhone 5s iOS 12.0 Press and hold the required app until the icons start to jiggle. When you use this method, all app settings and data are deleted from the phone memory. Press the delete icon.
Launch Settings-> Applications ->AppLocker. Set a password. Choose apps, you want to lock. Now every time you open locked app, you must enter the set password.
How to Hide Apps from your App Store History
2.1 Delete apps on iPhone 5/5S/5C by long pressing
Step 4: If you want to hide Stock Apps (like Safari, camera, and iTunes Store) on your iPhone X/8/8, toggle off the switch next to the App/Apps you'd like to hide. While if you want to hide the downloaded Apps on your iPhone X/8/7, scroll down to choose Apps under ALLOWED CONTENT section.
To hide apps from your iPhone's search results, go to Settings > Siri & Search. Then scroll down, tap the app's name, and turn off Show App in Search. You can also turn off all the other settings to stop the app from showing up anywhere on your phone.
To change your Allowed Apps:
Hide an iMessage app: Open a message, go to the three dot menu and choose Edit. Select minus button and choose Remove from Favorites. Hide an app from being seen: Open a message, go to three dot menu and select Edit. Under More Apps toggle off an app and select Done.
You can hide apps on your iPhone so they don't appear on your home screen or in search results.
As noted by iGeeksBlog, you can open the Settings app, tap “General,” then tap “Restrictions.” You'll need to enter or create a Restrictions passcode, and then after that, you can toggle off the preinstalled apps you want to hide in the “Allow” list.
Open the Phone app and select Contacts. Select Groups. Select Hide All Contacts at the foot of the screen. Go back to the main Contacts screen and you will see that all contacts are now hidden.
Here's how to do that: