Instagram Account Disabled Without Explanation: Reactivation Request

My Instagram account with the username _.yuvraj_singh._01 was disabled on 9 August without any clear explanation. I only realised afterwards that my account was gone and I have been very upset and stressed since then, because I have put a lot of time and effort into this account. I tried to contact Instagram for support, but I did not receive a clear reason or solution, and my account remains disabled. I still do not understand which rule I am supposed to have broken. I respectfully request that my account be reviewed again and reactivated, and that the disabling decision be removed so that I can access my real account and all my content again.