I'm not sure I 100% understand what you're asking. Are you trying to identify the ID's that saw page 1 and not page 2?
You could do that with a segment. A visit level sequential segment is what you would want. First condition would be Page 1, and then you would want an exclude container for Page 2. So the segment would return anyone who saw page 1 but didn't see page 2.
If you're asking to see how many people dropped between each page you could use a fallout visualization. Put the pages in the order that you're expecting people to see them, and then it essentially builds a sequential flow for you. It shows you how many saw the first step in your fallout, then how many saw the second step and what % dropped off. You can do that with as many steps as you need for however many pages are in your flow. But this only works if they're supposed to see the pages in a particular order.