One of the foremost ways people judge which search result might be relevant to their query is by reviewing the titles of the search results. Due to this, google search works hard to provide the best titles for documents. The results are shown so that the searchers can connect with the most appropriate content that creators, publishers, and businesses have produced.
Google search central has updated the section on the developer support page that provides advice on how Google controls the site titles used in search results.
Until now, the website page proprietors were in control of how their page titles were shown in query results. But in August 2021, Google reported that it is trying updates to perceive how title labels produce the engine’s result page. The focal point of this update was showing content that was more coherent, exact, and open titles for pages in search.
See also: Google Updates Quality Rating Guidelines -EAT
Why The Sudden Change By Google?
Google is using this advanced way to generate titles for the webpage. So that it is more straightforward to pursue labels in query items that precisely address what’s going on with the page.
This is just Google’s approach to further developing client experience, which is the same old thing. As in 2020, google rewrote meta descriptions to fit them to the hunt inquiry and accurately sum up what the site page brings to the table. 
But, google changing title labels doesn’t dishonor the meaning of your title tag but instead reveals insight into the title labels that are failing to meet expectations as indicated by them. You can use this as an indicator that your tag needs improvement.
See also: Google Updates Its Recipe Structured Data Guidelines
Title Tag Best Practices
Google suggested seven best practices for creating title tags that influence what you see in the search results.
Let us know what they are:
- Avoid overuse of keywords. Although sometimes it’s helpful to have a few descriptive words in the title. There’s no reason to use the exact words or phrases multiple times.
- Ensure that all pages have a title tag.
- Steer clear from phrases that repeat throughout the site. It is crucial to have a unique title for every page.
- It should be clear which headline is the main headline of the page. You can consider using a larger or different font for the main headline to make it more prominent.
- Your title tag needs to be explanatory but crisp at the same time.
- Branding your titles concisely is very important. Using branding phrases is acceptable, but it does not mean that you should use them on every page on your website.
- Use the robots.txt to avoid google from crawling your pages, but it may not always prevent your page from indexing. Abusing robots.txt will only land you in trouble because google can still go through your page by using the anchor text that links to the page. So the best way to avoid your page’s indexing is to let google crawl through it.
Google’s tips help diagnose why it is rewriting title tags in search results. You can use these guidelines for writing quality title tags that will help. Also, you avoid being rewritten in the search results.
See also: Google Title Tag Update Casualties Lose Search Traffic