Unity 2019 has a great new Android support, especially when installing via the Unity Hub 2.0.0.
In this video I show how to download and install the Android Build support and also the SDK and NDK Tools with the Unity Hub in version 2.0.0. Then I build a game that uses the Lightweight Render Pipeline.
After that I connect my Android device with a USB cable to my PC and deploy the scene to the device. The process is really simple now in Unity 2019, you dont have to download the SDK, NDK anymore from an external webpage, it’s all included.