You may not have enough *public* watch hours to be eligible for review. Creator Studio shows public & private combined, but you need 4k public hours alone. Try switching private videos to public, or if you've deleted videos you may be ineligible: https://yt.be/help/YPP-review
We’d recommend reviewing the YPP Policies again (https://yt.be/help/AsbB ) and making content updates to more closely align with those guidelines. Note: there’s no way to expedite this process – so just keep uploading original content and building your audience in the meantime.