This is a sure step, but make sure the TV is moved to the correct input option. There are quite a few people who forget this.
The Google Home application needs to be installed on Chromecast and if not, download it from Play Store or App Store.
Google Home supports both iOS and Android
Here we take the example with Netflix, but you can do the same with Hulu, YouTube, Pandora or any application compatible with Chromecast. (Note that Amazon Video does not support, you can view it on Chromecast but must play from laptop, not mobile).
The location of this button depends on which application you use, but normally it will display in the top or bottom right corner. If not, it may be in the same Play, Pause . options on the toolbar.
Cast buttons can be displayed in different places depending on the application
If you own multiple devices in your home, make sure you choose the right device. Naming Chromecast will be more useful when selecting them.
Now you can watch the show on the TV screen. Use your phone to remotely control operations like Play, Pause, increase or decrease the volume . If you want to stop playing, just select the Cast button again and select Disconnect.