Google is trying something new for search results on mobile. You should be familiar with the page numbers at the bottom of a search result page. They are now replaced with a single button “More Results”. Clicking on it shows more search results on the same page.
Google says that it is just a “Test”. However, the “More results” button is appearing on every mobile device I tried.
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We've been testing that and trying it with more people now.
— Danny Sullivan (@dannysullivan) April 8, 2018
Well, unless announced by Google, consider it to be temporary. Maybe, Google is collecting user feedback on this feature and will decide after the feedback is completed. This might change what it means to rank on the first page but we’ll have to wait and watch.