You were the one who made the claim that the Pope could not change what the church teaches. He certainly can, and it has happened in the past. (Not saying it has with this Pope, but in the history of the church.)
If you didn't want anyone to comment on that statement in your post,you probably shouldn't have included it.
I have no idea why you are being so defensive. Perhaps you have experienced some things in the past that cause you to react that way. I wasn't attacking the church or this Pope. I was just pointing out that church teaching can change, and has in the past. Whether that is a good thing or not is up to you.
The pope cannot change teaching
If you would cite a specific instance you would have a better argument than falsely analyzing my life which is not an effective argument