THIS
Yoast offers a % for the total content written JUST in the content box. The only way you cannot fit a keyword enough in an article is by the fact that the article doesn't fit the keyword.
And if it doesn't fit the keyword, trust me that Google search intent is not going to fit also.
After the last super algorithm update I can't remember the name (BERT was?), search intent is God-like.
So if you can't fit the keyword comfortably, think that doesn't matter if you rewrite the article and put that keyword a dozen times, it will take long if ever ranks...
Yoast has included stop-words not much ago (maybe in English was implemented time ago, but I've noticed this in my current language no more than 3 months ago). Therefore, if the KW is "game thrones" and you write in the article "game of thrones" it will sum up for the total %.
Also don't get too stucked in the order of the keywords. For example if the keyword is "throne game", just consider all the coincidences with "game of thrones" as valid. I'm not sure if Yoast can swap words adequately, but in my language it least, it can't. With the latest Yoast version (update if you don't see this), there is an option to include "synonyms" of the keyword, that sum up to the total %, so you can add there "game of thrones" to see if you get to the valid number.
This is all you need to know about this. Don't mess with Google too much in terms of content or intent. If Google can currently pick any content rewrite it as a whole, and still maintain the semantics, trust me that can spot any weird things you do within your text.