Managing personal Outlook.com account settings, security, and privacy
@Yiğit Uygar said
Microsoft says the email address isn't recognized ... and purchase Minecraft ... Is there any way to recover my account in this situation?
If this was an Xbox account, you can try the Xbox Account Recovery Form instead of the Microsoft Account Recovery form
https://support.xbox.com/en-US/forms/recover-your-microsoft-account
and I can provide information proving my ownership, and that the change wasn't done by me.
Microsoft Account Security is an automated process. Microsoft Support Agents can not unlock an account, reset your password, or change any Security Settings no matter what documentation you can present.
I am sorry. I know that losing access to your account is more than just an inconvenience, it can cause real hardships. I wish I could give you another answer.