A good start for the usiic blog

[uastend]

How to avoid mistakes in the initial development of the usiic.co blog How to get high-quality backlinks by topic How to Attract New Writers, Authors, and Editors.
Need experienced advice

 

[tazarbm]

How to get high-quality backlinks by topic

Have a look in the marketplace:
https://www.blackhatworld.com/forums/seo-link-building.43/
Or google stuff like "seo agency", "link building services", etc...

How to Attract New Writers, Authors, and Editors.

create a page on your site called "Become a Writer" / "Become an Editor" and explain your rules , and when people visit your site they might see this page and be interested in becoming authors.

Or go to freelancing sites (PPH, Upwork, etc) and try to recruit them from there. Probably not the most legit recommendation, but hey, if it works that's all that matters!