Whenever you install an app on your Android smartphone from the Google Play Store, it will be saved in a history that will take you back to this app even after uninstalling the app.
To view this history through uninstalled apps, follow these steps:
1. Open the Google Play Store on your Android phone
2. In the upper-left corner, touch the icon with the three bars -->The menu appears
3. Select "My Apps and Games", then go to the "All" tab
4. You will now see all the apps you have ever installed on your Android smartphone.
You can now reinstall the app that you are looking for by tapping on it. With the X-Icon you can remove the app from that list.
You now know how to quickly find apps that you have once installed through the Google Play Store on your Android smartphone.