Despite all your efforts to improve your website's domain authority, it has remained stagnant. You've tried various strategies, from optimizing content to building backlinks, but nothing seems to be making a significant impact. At this point, I believe it's time to bring in the expertise of professionals. Hiring an SEO agency could provide the specialized knowledge and advanced techniques needed to elevate your site's authority. They can offer the best strategies, comprehensive audits, and continuous monitoring to ensure your website achieves the growth it needs.