Steps to Increase Your Website’s Domain Authority ,
Work on Your Off-Page SEO
On-Page SEO Optimization
Work on Your Technical SEO
Make Sure Your Website is Mobile Friendly
Improve Your Page Speed
Increase Your Social Signals
Be Patient .
Use a tool like SEMrush, which will help you identify backlinks that harm your domain authority score. Once you have the complete list, manually remove them if possible, or disavow them through Google.
Domain Authority is one of the ranking factors so it is crucial to improve it.
You need to work on your Off-page SEO, Technical SEO, and optimize your On-page SEO, make your site updated and mobile-friendly, improve the site loading speed and social signals.
Don’t get caught up in made up metrics. It’s fine to use as a way to gauge how your site is currently doing but don’t let it be your only goal. If you want people to actually enjoy your site and keep coming back then you need good content that is optimized for search engines.
That said, if you just need to fudge the numbers and don’t mind your site eventually getting flagged by google just go buy a shit ton of cheap backlinks