How do I undo the IOS 18.1.1 update?

My phone updated and I hate the way everything changed. My photos app is all switched around and confusing now. There are other apps as well that are confusing now. Besides apps my control center is switched around as well and when I tried to move around things in it, I can only switch some of them back to the way I had it. I’m not the best with change and too many things changed on my phone that I’m getting over stimulated trying to use my daily apps.