Should i hire a self-publisher for my sport program?

[Silviamurphy]

I am a self-published writer and have a few unpublished novels. As I lack professional marketing expertise, I was unable to find reliable publishers who could help publish my book. I have researched different websites and found some publishers. But they do not specialize in my genre. If any friends help me find professional book-writing services in town. The book company reviews my manuscript and provides constructive feedback and recommendations for improvement. They could write an effective query letter that captures the publisher's attention. They help me connect with literary agents who can help my work get published. Does anyone have an idea of outstanding book writing services, please let me know.