Managing presence indicators such as Available, Busy, or Away to reflect user availability
Hi Joseph15_,
Thanks for your post in here. In Microsoft Teams, when users aren't logged in to Teams on any of their devices for a few minutes, they appear offline.
Moreover, your current presence state changes to Away when you lock your computer or when your computer enters idle or sleep mode. On a mobile device, your presence status changes to Away whenever the Teams app is in the background.
So, regarding your concerns, if you would like your status show as “Offline", please kindly check and ensure you have signed out your account from Teams on all devices, then wait for a few minutes to check the result.
Here are some documents for your reference:
Best regards,
Jennifer