Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I’m sorry this happened. Because the attacker replaced your sign-in alias, your original email is no longer identifying the account, which is why the standard ACSR form says the account cannot be found.
Please use the Sign-in Helper, follow the account-takeover recovery route it provides. Include your previous account details, old passwords, Minecraft/Xbox gamertag, purchase information, and the devices normally used with the account. Use a separate working email for the response and check its Junk or Spam folder.
Please do not post receipts, passwords, verification codes, or email addresses here. This is a public forum, so forum moderators and other members here cannot locate the attacker’s new alias or restore the account manually. Minecraft access is tied to the underlying account, so recovering that account must come first.
Thank you for your understanding and time