Whether the second picture refers to a list page?
By default, there is only PAGE tab in the site page. And in the list page, there are ITEMS and LIST tabs which are in the ribbon can perform other settings for the current list.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.