You can setup your notifications settings for each app.

You can turn app notifications on or off, have notifications play a sound, choose how and where you want app notifications to appear when your device is unlocked, and more.

Step 1: Go to Settings  > Notifications.

Step 2: To choose when you want most notification previews to appear, tap Show Previews, then select an option—Always, When Unlocked, or Never. 
(You can override this setting for individual apps.)

Step 3: Tap Back, tap an app below Notification Style, then turn Allow Notifications on or off.

Step 4: Tap Notification Grouping, then choose how you want the notifications grouped:

To turn off notifications selectively for apps, go to Settings > Notifications > Siri Suggestions, then turn off any app.