Backlink Submission Required Urgent

I am in need of urgent backlink submission for my website. The website URL will be provided in the project description. I am looking for high Domain Authority (DA) links to improve my website's search engine ranking. I require a total of 21-50 backlinks. The ideal freelancer for this job should have experience in backlink generation and be familiar with techniques for acquiring high DA links. Niche-specific links are not required, but a mix of both high DA and niche-specific links would be appreciated.