Within the Chat or Channel click on the ➕

Select "Power BI" from the available apps

If this doesn't appear in the suggested apps, then you can search along the top of this pop up

Click on the environment the report is in. In this instance, we'll pick "Account on a Page"

powerbi.microsoft.com

This guide provides step-by-step instructions on how to add a Power BI tab to Microsoft Teams. By following these steps, users can easily integrate Power BI reports into their Teams chats or channels, allowing for seamless collaboration and data sharing.