seo backlinks

I am looking for a Freelancer to help me build SEO backlinks for my website with its current domain authority of less than 20. I have an established list of keywords I would like to target. A major emphasis of my desired backlinks are Directory Submissions, but I am open to other suggestions. I expect the Freelancer to suggest additional ways of improving visibility, as that is the ultimate goal. Looking forward to seeing what creative suggestions are put out there!