Focus Keyword (Primary and Secondary)

I was reading your article about How To Score 100/10 With Rank Math. I was using Yoast before that. I got attracted towards Rank Math because it supports 5 Focus Keyword and I also know the importance that using fewer keywords are better.

My question is what if I want to rank for let say “PowerPoint Animation” and I have written several articles on how to make animation in PowerPoint which ultimately targets the Primary Keyword “PowerPoint Animation”. But as we know that using same Focus Keyword for many posts will not be a good idea as they can might compete which each other. What if we add them as a Secondary Keyword.

I create animations in PowerPoint like Bicycle Animation in PowerPoint Animation Tutorial, How To Make Walk Cycle in PowerPoint Animation Tutorial. So, what if mostly use “Bicycle Animation in PowerPoint” as Primary Focus Keyword and “PowerPoint Animation” as secondary. But that is to say that in future I am going to write 100s more posts about PowerPoint Animation. So, can I add a Secondary Focus Keyword “PowerPoint Animation” to all of them.

Another example could be that I have written 20 different articles on a single topic “Free YouTube Intro Templates”. Visitors can download and learn more about how to customize each template. So, what Focus Keyword I can use for all of the similar Template posts.