Where to get ads on HTML for Android app?

Question

Android

I have an application, a game written in HTML, and recently I wondered how to monetize it. To my deepest regret, all services offered integration through Android Studio or Eclipse, and I also did not find ready-made options for integrating into the assembled apk. Actually, the question is, is there, and if so, ad networks that provide a GIF for embedding into the application, or JS / HTML code for putting into the page code, or an option where a special application can modify the activity in accordance with the requirements?