Hello, thank you for reaching out to Microsoft Q&A.
Note - This is a peer-to-peer support forum. Account or billing-related queries fall outside the scope of our community guidelines, as they usually require sharing personal information. Posting such details in a public forum poses security risks and violates Microsoft’s terms and conditions. For this reason, we can only offer general guidance on how to recover your account.
You can review your enforcement history to understand why your account was suspended and the type of enforcement action taken. Make sure you sign in with your account to view your enforcements.
https://support.xbox.com/en-US/help/family-online-safety/enforcement/enforcement-history
If your enforcement action is eligible for a case review, you can submit an appeal. As you have already tried this and access is still denied, unfortunately, there are no other options to unsuspend your account. Only the enforcement team can assist with this now.