Okay enough waffle, have a read of the dynamic pages link above and of these pages too if they are not already included in that section.
https://support.wix.com/en/article/what-content-will-my-dynamic-page-display
https://support.wix.com/en/article/making-multiple-dynamic-page-urls-unique
https://support.wix.com/en/article/about-read-only-url-paths-in-your-collection