Three things to consider:
1. Number of pageviews per visit. [After a user visits your site, how much interaction he does]
2. Retention Rate [How much time does the user spends time on your site]
3. Bounce Rate (Very Important) [if your bounce rate is more than 68.3%, Sorry but you are doomed.
***White HAT (Organic)
•Target long tail keywords, when they start ranking, then --Pour your link juice in more corner stone keywords.
•Build Hooks on your site that nets the user for long period of time.
•Do Email SEO marketing. Provide free value like an ebook or infograph in exchange of visitor's email.
•Create social media engagement & traffic from targeted social has been proven very good for seo.
***Black HAT (Also Organic)
•Build a PBN (Personal Blogging network) & bring down the link juice from them.
•Buy Aged Domains for lengthy SEO campaigns.
•Acquire domains with DA & PA (Domain authority & Page Authority)
•Also, please don't forget CF & TF (Citation flow and Trust Flow) of the domains.
Best regards.