Experts! A month ago, I opened a site that has contents in korean. Of course, I submitted site-map, robots.txt to google. I installed google search console and google analytics. Recently, my site appeared in SERP, correctly in 4th page(all search results - 10~11 pages). After a day my site ranking decrease to 8th page, and after 2 hours again my site increase to 5th page. And In 3 days, now, my site appeared in 9th page. This status lasted for today. At last, is this my final ranking? And Must I begin from this ranking? I didn't use any Black Hat SEO and my site has not so bad contents. Generally, What is the first appeared ranking of site? Last page or previous page?