How can I get the dark mode on Android 8?

 How can I get the dark mode on Android 8?

Dark theme is available in Android 10 (API level 29) and higher. It has many benefits:

• Can reduce power usage by a significant amount (depending on the device’s screen technology).
• Improves visibility for users with low vision and those who are sensitive to bright light.
• Makes it easier for anyone to use a device in a low-light environment.

Dark theme applies to both the Android system UI and apps running on the device.

So, basically you cannot have dark mode .System wide dark mode is partially available from android pie and is completely implemented in android 10 .

But some of the apps support dark mode you can enable them under Settings->Themes->Dark

Hope this answer helps

Suggestions are appreciated

Thanks for reading and have a good day :)