Need High-Quality Backlinks for https://downloadfrompinterest.com/

I am looking for an experienced SEO expert to create high-quality backlinks for my website DownloadFromPinterest.com The goal is to improve domain authority, increase organic traffic and boost search engine rankings.

Requirements:
Only high-authority backlinks (DA 50+ preferred)
White-hat SEO techniques only
Guest posts, niche blog comments, article submissions and web 2.0 links preferred
No spammy or PBN links
Dofollow links from relevant websites
Provide a detailed report of created backlinks

Skills Required:
SEO & Link Building
Off-page SEO
Guest Posting
Article Submission

Please mention your strategy, expected time frame and samples of previous work.