How do I make a list workflow that runs when a list is updated

I have never worked with workflows or Sharepoint before, so there are many things I do not know. I have an assignment in Sharepoint Online in which I created a repository using a list. In this repository, people manually enter certain instructions as well as their current status: "Incomplete" or "Complete"

I now want to create a second list that shows all the instructions whose status value is "Incomplete". I believe creating a workflow is the correct solution, but I have no idea how to make the workflow run every single time the repository is updated. (It's probably something small that I am missing).

Any leads, ideas, or general helpful information/links are greatly appreciated.