The preferred way to use Microsoft Teams in Linux in the future is via the progressive webapp. You can use webapps with Edge and Chrome browsers. Both are installed by default in Cubbli.
Note: Outlook is also available as a progressive webapp. The same procedure applies.
Example of setup with Edge:
Start Edge browser
Go to https://teams.microsoft.com (for Outlook go to https://outlook.office.com/mail/)
Select Install Microsoft Teams
It opens up in a new webapp window
Create shortcuts by first selecting Manage apps
Then click the three dots on the upper right corner of the Microsoft Teams under the Installed apps
Select either or both
If you selected both you should now have shortcuts in the menu and on your desktop