Are Editing Services Important for Self-Publishing?

I’m getting ready to publish my first book and wondering if self publishing editing services are really necessary. Can professional editors significantly improve a manuscript’s clarity, structure, and overall quality, or is it possible to manage with self-editing and feedback from beta readers? For authors who have used self publishing editing services, did it noticeably enhance the final book and reader experience? I’d love to hear your thoughts and recommendations before making a decision.