Google is the most popular search engine in most parts of the world (except in China and Korea). One of the reasons it is popular is that the results are displayed quickly . About 3-4 years the search results were very useful, which made it popular.
However in recent years, the search results have become less relevant. Google’s algorithm is based on the principle that a website’s importance depends on the number of website’s that link to it. In the early days of the internet, most websites were non-commercial in nature and links were usually relevant and free, so their algorithm was fairly accurate.
Search engine traffic is “free” traffic for webmasters. Once you rank well in a particular search engine, you will get most of the visitors for a particular search term. Since monetizing traffic became easy with advertising programs, webmasters do not mind spending money to rank well in search engines. So the more the webmaster spends on purchasing links, the higher a page will usually rank in Google. Also they seem to give a lot of weight age to the amount of text on a page, it does not matter whether the information provided is useful.
This has reduced the usefulness of Google as a search engine, but it still can be used, since it indexes a lot of web pages. If you are searching for information about a particular product or service or reviews about it , the first results are likely to be irrelevant. To get accurate information you should type “the name of the company + the name of a competitor/another company” working in the same area. The results will be fairly relevant.