How to Edit Pages?

Hello, I have the free version of this Template. I'm trying to add a new page, which I did, and to edit that page, I went to Appearance > Customize > Pages, and Added a New Page. It then said to edit the blocks, I had to edit the template. But in doing so, every time I add a new page they all look the same, and if I edit one, it affects all of them. How do I edit the page itself, and not the template? Thank you for reading!