which is the best

hello
i wanna my site to rank in the search engine. which is the black best way to do
black hat seo or white hat seo .

The line between black hat SEO and white hat SEO is a very faint one and causes more arguments than it does discourse. My personal opinion is that black hat SEO is most effective over short periods of time, especially when a site is first starting out. For longevity and sustainability, white hat is always your best bet.