UPDATE #3 :
So what I've done in this week is I read a lot about SEO, most of the articles that I've written weren't optimized (keywords). After some researches I was able to find a good keyword, I saw a blog with a 16 DA score with 0 backlinks using this keyword in one of their articles.
AND this article was ranked on the first page on google. Just to know this blog don't have the HTTPS request.
My conclusion is if this keyword is ranked with a shitty blog on the first page of google so I can do it too.
Furthermore, this keyword has an amount of 1200 searches per month, so I think it's a good keyword, to begin with.
I'm open to any advice.
*Note I will Try to update at least once a week.*