While we can't comment specifics, we recommend going through our Help Center article on YPP policies to have more insight & make changes to your channel/content accordingly: https://yt.be/help/AsbB . Hope this helps.
Thank you for the response. But does unlisting those previous videos would help? Since deleting the videos would totally damage my channel due to some of them have a lots of views already. And I already did my best to comply with the guidance since its filtered completely.