Suggestion for Focus Keyword for articles under the same topic/software

I am working on a Tech Niche Site and planning to publish monthly updates for a particular software. I have a doubt about the Focus Keyword.

Assuming “Software1” is the focus keyword. I would like to publish articles like these each month as separate articles

1. December 2020 - Tips
2. January 2021 - Tips

What focus keyword should I use for each of these articles since I cannot use “Software1” for each of these articles. Any suggestions?

Maybe use semantically related keywords and find out what other related expressions are people searching for. https://contentmarketinginstitute.com/2017/01/tools-find-keywords-content/

If I am writing about Windows 10 then I need to use related terms and use them for each article?