OBS is free and open-source software that will do all the heavy lifting and stream to YouTube.
These plugins provide various motion and graphic enhancements. Download each and run the installation (download button is on the top-right corner of the page).
This provides the various layouts and graphics you will use for the stream. Download and unzip it somewhere on your machine.
After opening OBS, go to Scene Collection → Import. Navigate to the directory where you unzipped the scene collection and select the file named OBS Profile.json.
In OBS, select the new Scene Collection by going to Scene Collection → Church Setup.
In the Missing Files window that comes up, hit the Search Directory... button and select the folder you unzipped the scene contents into.
The interface is responsive, so will work with your smartphone, tablet, or laptop
It has built-in workflows to make it easy to flow from one scene to the next
To help you have the greatest confidence possible, it even includes a live preview