Who triggered the automation?

Can automations be conscious of which user triggered it?

Here are my two use cases:

  1. In the custom email notification, I would like to add a line that would identify who made the change. Example: “A sub-item was changed to {sub-item status} by {user}.”

  2. I would also like the notification not to be emailed to me if I was the one to make the change.

Thank you