What is good to know about SEO? - SEO basics
SEO optimization is a relatively slow process. All changes that are made on pages will be shown as a result of a search after a while, not right away. That is why optimization needs to be done carefully, and unconfirmed actions are not to be done all at once, but one by one, so SEO effects could be monitored.
There are no guarantees to good disposal on browsers. By "good disposal" we mean the first 30 places. The most users never browse more than the first three result pages, and browser shows 10 results per page by default. In the same way you are trying to push up your website to the top, it is very possible that other 10 webmasters are doing the same thing. That is why guarantees for the SERP disposal should never be given. It is pretty ungrateful to say that a website is going to be in the first or nth place, after the optimization is done.