I want to add sellers for my e commerce website

My project is all about adding sellers to my e-commerce website. I am looking to add both individual sellers and business sellers to my platform. My preferred method of attracting new sellers is through a direct outreach strategy, where I reach prospective sellers directly and encourage them to join my website. Additionally, I also want these sellers to focus on artificial jewelry products, rather than any type of products. I need a freelancing partner who has experience in helping e-commerce websites reach out to prospective sellers and grow their user base.