Add Phaser 3 game to existing android application


I am trying to add my phaser 3 game to an existing android application in android studio (Which serves other purposes beside the game). I have tried doing this by simply adding a webview to the application, it is not working at all. seems to be issues with the resolution… and some.

I am now thinking off transferring the game to the phonegap template and then using webview again. is this a reasonable thing to be doing? are there any more ways I can run the game on my android application??

Where I am confused is I am not sure if phonegap games can be added to existing projects, or they can only exist independently as the application itself.