Thanks for reaching out. Just to confirm, was your channel part of YPP earlier and now demonetized, or is it the first time you've applied and were rejected? Let us know.
Appreciate the info. As your channel is out of compliance due to reused content, we recommend taking a look at our YPP policies and make changes to your content accordingly: https://yt.be/help/AsbB . You can always re-apply for monetization after 30 days. Hope this helps.