how can I stop my screen randomly turning on?

I notice from time to time my phone screen turns on I googled about the issue and found https://www.howtogeek.com/255696/how-to-disable-androids-ambient-display/ , but I see no 'ambient display' option there. I have my phone on charge though that probably isn't relevant How can I stop my screen from randomly turning on? In answer to the comment asking "What is the device that you are using? Several OEMs such as Huawei, Xiaomi, Samsung run a skinned version of Android, which has enhancement with different names. So, knowing the device will make it easier to understand. Also, can you somehow upload a picture of how your screen looks when it wakes up?" The phone is a Doogee Y6c on Android 6.0. It seems maybe it hasn't happened for about 6 hours. It was happening quite frequently earlier today. Maybe one of the standard apps I had open was triggering it. The screen that was showing was a locked screen, then I turned off the display lock, and it showed just the regular home screen.