Why there are no non-call lockscreen notifications in my Nokia 3.

[Ammar-G-240]

Hello People!
I have a NOKIA 3, with Android 7.0.

Whenever an sms/whatsapp/email notification comes when the phone is locked, it only makes the notification ringtone e.g sms/whatsapp/email ringtone, but does not turn on the screen, like normally phones does..., meaning along with the ringtones the screen also gets turned on showing what has came... a message, an email, a whatsapp etc... but with mine's doesn't happen.

So please help people, this is frustrating.