Hi @Елена Репина ,
Thanks for reaching out.
I understand you are trying to access Azure Active Directory and facing issues.
This is due to you sign into Microsoft services tenant (f8cdef31-a31e-4b4a-93e4-5f571e91255a) as a standard user with restricted access.
This error usually occurs when you sign into Azure Portal using your personal account which is not added as an external/guest user to an Azure AD tenant.
You can ask the global administrator to invite you as a guest user as mentioned here: https://learn.microsoft.com/en-us/azure/active-directory/external-identities/add-users-administrator#add-guest-users-to-the-directory. When you accept the invite sent to you via email and added to tenant, then you can also create your own tenant navigating to https://portal.azure.com/#create/Microsoft.AzureActiveDirectory.
Once you are added to an azure tenant then you accept the invite sent to you via email, which will provide you the access.
Hope this will help.
Please remember to "Accept Answer" if answer helped you.