Need your advices for my first experience with SEO

Last month i did some keyword research to find an easy keyword to rank it in google
and i found an easy keyword ( With Difficulty 19 in Moz keyword Difficulty Tool ), i wrote a very good and long content which focus on it, i also did a very good on-page seo for my website and i checked it with website auditor ( The Seo Power suite Tool ) and I got a 97% Degree, I build some quality backlinks daily and i only used ( bookmarks, blog comments, expired tumblr method )

i also put some fresh content in my website ( daily ) and make internal link for my home page
last week my website danced between #85 and #65 but my website now dancing between #22 and #50 in Google and sometimes it completely disappear, IS THAT NORMAL??
and how long can it take to be on the first 3 results or at least ( the first page ) ?

small note : my website age is about ( only 3 weeks old )
i want to give me your opinions and advices because it is my first experience with SEO
I'm very sorry for my weak English, it's not my native language

Team Hell Crew said:

last week my website danced between #85 and #65 but my website now dancing between #22 and #50 in Google and sometimes it completely disappear, IS THAT NORMAL??
and how long can it take to be on the first 3 results or at least ( the first page ) ?

Click to expand...

1. It's completely normal and is called as Google Dance.
2. Unless the top 3 ranking sites are similar to your site in terms of age/content/backlinks, you'd need a little more powerful links to push it to the front page.

@ugjunk shared some nice pointers here in this thread which you might find useful : https://www.blackhatworld.com/seo/5-ways-to-quickly-improve-your-rankings-in-2017.976706/

Our SEO tips for beginners guide includes real examples and actionable Page titles are a very important aspect of SEO

babablack12 said:

Our SEO tips for beginners guide includes real examples and actionable Page titles are a very important aspect of SEO

Click to expand...

@babablack12 Where is THE book and do you think your reply is relevant to OP's question?

Team Hell Crew said:

last week my website danced between #85 and #65 but my website now dancing between #22 and #50 in Google...

Click to expand...

This shows your links are working

Team Hell Crew said:

... and sometimes it completely disappear, IS THAT NORMAL??
and how long can it take to be on the first 3 results or at least ( the first page ) ?

Click to expand...

a/ as your site is only 3 weeks old, it could take a few months to stabilize
b/ you will need other types of links such as guest posts to reach the top of page one

Yeah, its really normal and your site is new and it gets a Google dance for the rankings.
Concentrate on your articles and On page methods which have to be effective for rankings and traffic.

Yeah, it's quite normal, fluctuation in rankings do happen from time to time.

Hey, I would urge you to use at least five to seven weeks of rankings before you start to freak out
You should also compare your own fluctuation to your competitors.
I would try and compare your rankings to page traffic you get as well.