Link building is important in terms of search ranking.off-page SEO which refers to backlinks and other external signals. The quantity of backlinks a site has is in a good indicator of its popularity or importance with search engines. Create articles, videos or any other content that people will find useful. Distribute that content through online directories, social media sites. If you don't have some experience you can buy such links, for example here is a good service for this purpose
https://linklifting.com/help/seo-monthly/
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