This is the advice Yoast gave me on my article:

After hours of torturing revisions, I got an orange. I tried over and over again but I got stuck between red and orange.

It is really hard to get a green.
I do have an article that got a green. Though it is green, it is not 100 percent Green but I guess I should be happy because a green is a green.

Correct grammar can increase your chances to get a green but it is not enough. I have an article that gets a perfect score in grammarly but cant get a green with Yoast. Yoast loves sentences in Active Voice. Many people talks and writes in Passive voice. It is something I am trying to learn but its hard.
I only discovered Yoast because the Website I work for have a Yoast Plug in. I tried copy pasting articles from big news sites, LOL they only get an orange. So an orange article can let you pass in Fox News, CNN, Reuters.






