I contacted one of the most popular and recommended SEO gig in Fiverr, but he said he can't guarantee the result. And I also told him my site is a new site, so he said don't expect to get from nowhere to 1st page. I asked him again he said he can never promise the result.
I'm not sure how effective the SEO gig is.
What is your experience?
And also how did you decide about what keywords your want to rank with? Do you go to Google Keyword planner and pick out the most clicked keywords?