Tactics of black hat SEO are buying of links for ranking the site, maneuver deceptive cloaking methods, any tactics that meant to scam the system instead of giving fair value to your audience, and having a better experience from your website. Google quickly discovers such site and immediately get them banned, what a waste of time and energy for those who invent such website and practices.
White Hat SEO methods are for everyone who has goals
Exploration of black hat techniques gets your site banned from search engines, and especially from Google, the algorithm always detects any bad behavior from people trying to deceive search engines and even the people.
I said because Google is the number search engine, many people in billions surf on the internet every day, and each person trying to get information is a prospect/potential customer for your blog to be seen by a new person/user.
Content is king, so they say.
Have a great day!
Tom