I am trying to change my cover pic and have read previous posts about this however I don’t see anything to the right on the photo tour that says make cover picture
On the app, when you're on the page that says "Photo Tour" at the top, you need to click "All Photos" in the top right. It will show your current cover photo in first position with a small label that says "Cover".
Click on the photo that you actually want to make the Cover Photo so that it enlarges. It will show the option "Make cover photo" that you can click (above the photo).