Can anybody tell me how to use my AppleTV app to connect without purchasing the app or to stream on my route coo other channels and stations or networks

Can you elaborate on what you have for equipment, brands and models, and how they connect? If you can, try to avoid the word ‘thing’, for more clarity.

1. The Apple TV app has several in-app channels, for those users that subscribed to any of those channels in the Apple TV app. It is not exchangeable with subscriptions of the same name as started outside the Apple TV app.
2. The Apple TV app on iPhone, or iPad, or Apple TV box, can connect to select other apps, for inclusion of their content. That feature doesn’t work in the Apple TV app on third party devices, nor on Mac.
3. The Apple TV app on third party devices is not suitable for adding more apps on a third party device. You will have to choose from apps as offered in the device manufacturer’s app store.