Hi there. If you upload content from multiple sources, or reupload/repurpose someone else’s existing content (ie “reuse content”) then you won’t be eligible for YPP. Check out the FAQs here: https://yt.be/help/reused-content … and you can always reapply in 30 days.
I guess uploading gameplay videos that I've recorded myself is considered ''reused content'' nowadays
looking forward to reapplying. And, thank you.