How to avoid the screen turning on for each notification?

### Problem I have a Nokia 3 with stock Android installed, not rooted. Whenever the phone receives a notification, the screen turns on. I wish to change this, mostly because it drains the battery and causes me to activate the camera in my pocket. In fact, I would appreciate if the screen **only** turns on when I press the power button. **Edit** As was said in the comments, the Nokia comes with Android 7 (Nougat) installed. ### What I have tried so far - Just for the record, I did browse through the settings of the phone looking for an obvious choice, and could not find any way to turn it off. - I have tried every possible setting for lockscreen notifications to no avail. - There is no [Ambient display](https://www.howtogeek.com/255696/how-to-disable-androids-ambient-display/) option in the Display section of my settings. - There is a screensaver option there, but whether it is on or off makes no difference. - After reading [this](https://forums.androidcentral.com/samsung-galaxy-s6/602793-turn-screen-wake-off-notifications.html) , I tried using another text message application than the default. That also did not help.