Is it possible to increase DR to the level of large funded competitors?

TLDR:

How can we boost our Domain Rating (DR) to the 30-50 range to improve search engine rankings and compete more effectively with highly funded industry leaders? Is it even possible as a bootstrapped Indiehacker?

We're currently achieving rankings between 10th and 50th for most of our targeted keywords, thanks to a significant amount of effort and dedication.

My top strategies were:

1. Listing on all free AI directories including theresanaiforthat and saashub.
2. Posting on forums and linkedin regularly.
3. Asking people to link to our site.

But is it even possible to rank high without substantial marketing efforts supported by funding?

My project VideoDubber.ai ( https://videodubber.ai/ ) delivers seamless video translation services. What sets us apart is that we currently offer a pricing structure that is 9 times more cost-effective than competitors like Rask.ai and other alternatives.

In contrast to Rask's substantial $38 million in funding and their larger team, I am an indiehacker spearheading the project.

Our Domain Rating (DR) currently stands at 14, a result of acquiring 2.2K backlinks from 72 unique domains. However, we are looking for ways to boost our DR to the 30-50 range, which would significantly improve our search engine rankings.

I'm open to suggestions and insights from experts like yourself. What strategies or organic methods do you recommend to help us match the larger players in the industry and enhance our online visibility? Your expertise would be greatly appreciated.