To determine if the email you received is a phishing attempt, you should check the sender's email address. Legitimate emails from Microsoft support will come from specific domains such as microsoft.com, microsoftsupport.com, or mail.support.microsoft.com. If the email is from a different domain, such as M!CROSOFT, it is likely a phishing scam.
Additionally, you should be cautious with any email that contains unusual formatting or spelling errors, as these are common indicators of phishing attempts. If you suspect the email is a phishing scam, do not reply, click on any links, or open any attachments.
For further guidance on identifying and reporting phishing emails, you can refer to Microsoft's resources on phishing protection.