Hello Angela,
My name is EngineTyme, an Independent Advisor and a Microsoft user like you and I would be glad to help you.
I am sorry to hear that you are unable to create an organization-wide team in Teams. According to the Microsoft documentation: (https://learn.microsoft.com/en-us/microsoftteams/create-an-org-wide-team), only global administrators can create organization-wide teams. Additionally, there are some requirements that need to be met before you can create an organization-wide team:
- Your organization must have no more than 10,000 users.
- You can have no more than five organization-wide teams per tenant.
If your global administrator is unable to create an organization-wide team, you can try contacting Microsoft support for further assistance.
You could raise a support request from your Microsoft 365 Admin center:
Sign in to Microsoft 365 admin center with your Microsoft 365 admin account, and select Support > Help and support, enter your question and select Contact support.
Here is link to sign in to Microsoft 365 Admin center: https://go.microsoft.com/fwlink/p/?linkid=2135542
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Please let me know if you have any questions or concern.
Best regards, EngineTyme.