Hi @ Hamza UĞUR
Thank you for sharing your issue on Microsoft Q&A.
I understand that you're having trouble deleting your Microsoft account because your part of an organization called "Tadım Gıda Madenleri San. And Trade. A.Ş." and need to leave it first. However, you mentioned that you have no connection or interest with this company.
Based on the error message you received; it appears you're the last administrator of the organization. so, you must delete this tenant. If you want to leave the organization, you'll need to add another global admin to the tenant first. Once that's done, you'll be able to leave the organization.
Let me know if you need further assistance.
Best Regards.
Harshitha Eligeti.
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