Hey there, hope you're well! 🙂
Unfortunately, our Platform Quality have deemed that the content of your site isn't something that we're looking to monetize at this time, as it likely won't be considered as having sufficient content to Google. Apologies, I realise that this isn't the news that you will have wanted to hear - it's not a reflection on the quality of your site, it's just not the type of site that we're looking to work with, at this moment in time.
I hope that makes sense. If you have any further questions, let me know - though I'm unable to go into too much detail regarding the review process.
-Lilla