There is such a faint fan in the background of my audio, I've tried using the presets in Pr to fix it but my audio ends up becoming super processed, any suggestions?

I’m currently in the process of creating a course that will take people from zero to hero with video editing. All the way from $0 to $5k-$10k per month editing YouTube videos And for YouTubers, it’ll take your videos from looking like hot steamy dog poop to professional and engaging for your audience. The attached screenshots below is the current outline for my course as of right now. I’m trying to serve those of you in the community, however, so give me your thoughts on everything you see. Is there anything missing? Things you want to see? Is it too much? Anything you don’t need? Etc. The more feedback I get, the more I’m able to help you achieve your goals so please don’t be shy! Love y’all and let me know how I can help more 🙏