How is the rank of a website improved in Google?
When you create a new website, you would see that some pages of it gain rank in Google with difficulty. Some other would appear on the first page of search results instantly after creation. Some of them have extremely varying ranks and some are deleted from the search result without any reason and reappear alternatively. All of these express that improving the rank is getting harder every day. Google algorithms are becoming more complex and more websites are getting familiar with SEO techniques which makes the competition more difficult.