Hello,
We checked the page you shared on Google using the site: operator and it was not indexed on Google Search Engine.
To assist us in further investigation, could you please provide a screenshot of your Google Search Console account’s Page Indexing Report?

To share the screenshot, you can use a tool like https://imgur.com/. This will allow us to better understand the situation and provide the appropriate support.
Meanwhile, we have provided some guides you can follow to ensure your website keeps showing up on Google search results: https://rankmath.com/kb/google-index/
https://www.youtube.com/watch?v=_YYecHEIwMs
Please note that, according to Google, crawling and indexing can take anywhere from a few hours to a few days/weeks. Be patient and monitor progress using the URL Inspection tool.
Also, ranking with your desired keywords/keyphrase depends on much more than your on-page optimization.
Please, note that only Google can determine how results are ranked in SERP and it is up to Google to show your content for the desired keyword when searched. Google’s algorithm controls the results in Google search result pages. However, Rank Math ensures that your website is indexed and available for search engines to display in search engine result pages.
You can learn more about the key factors that help determine which results are returned for a search query from this Google article: https://www.google.com/search/howsearchworks/how-search-works/ranking-results/
Finally, note that ranking on Google depends on different factors. Here are some of the factors Google considers when ranking your website.
1. Your website’s authority
2. Your content’s quality and how better it is than the other article currently ranking.
3. How competitive the keyword you are using is.
4. How many backlinks you have and if they are better than what the other websites ranking for that keyword have.
5. Your website’s crawlability.
6. Frequency of new content and content updates.
7. So much more that there is a dedicated blog post on it by Brian Dean 🙂 https://backlinko.com/google-ranking-factors
We hope that helps. Please don’t hesitate to get in touch if you have any other questions.
Thank you.