while Installing an app shows an unsafe

What is the name of your app?

I just made an educational app

Describe your app:

it is just an normal educational app, i have use webview in app


App Store/Download link:

AIA file (Optional)

If you install apk without download it from Google PlayStore, It’s a normal warning , accept and go on, because your app isn’t checked from Google .
If you are speaking about a PlayStore app then we need more informations.