My website is no longer on page one

Selected answers from the Dumb SEO Questions Facebook & G+ community.

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  Ethan Lazuk: Search rankings can change often and for many reasons. These reasons include Google algorithm updates, changes to websites that compete with you, and changes in searchers’ behavior. If you changed your website recently, maybe investigate also those changes, especially if they were technical or altered content a lot. One approach to try to improve rankings is to look at the websites on page one for your searches and see if they offer something you don’t. Then update your site accordingly to be more relevant and better satisfy search intent. Here’s a helpful article on rankings: https://www.searchenginejournal.com/why-sites.../378482/. Hope that helps!
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  Erwin Alam: I only update the dashboard page view. does it affect the SERP?
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  Ethan Lazuk: Erwin Alam it’s difficult to say without knowing details.
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  Ammon Johns: One of the first questions is was this all on the same device/computer? One of the reasons that professional SEOs only use tools for tracking positions is that all devices have a personal search history, at Google`s end of the system. The search results seen by a single IP or device will, over time, be affected by the fact you have run the search before, what sites you have looked at, and be a set of personalized results to your behaviour that would not be seen by anyone else, or not seen on a different router, etc.
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  Erwin Alam: i have checked it through different devices and different ip but the result is still the same
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  Ammon Johns: Second question then: How long was it on page 2 for? I ask this because ever since the Caffeine update of the mid 2000s Google introduced a feature that gave freshly discovered content a boost to ranking to counter the fact that News wouldn`t have many links when it was still actually new. If Freshness could be the cause, this expires fairly quickly, and you settle into the position based on content and `authority` (links).
  
  Freshness is not, of course, the only Temporal dynamic that is in search algorithms. There is also `burstiness` that detects when there is increased or new interest in a search term that detects there might be news, or a new meaning relating to it, and can trigger both extra crawling of links related to the search term, and to changes in ranking algorithms to promote freshness much more than usual.
  
  Then there`s seasonality, etc.
  
  https://www.slideshare.net/.../temporal-web-dynamics-and... is a very good set of presentations on temporal dynamics in search, and explains a fair few of the temporary and conditional boosts, and demotions, that can occur.