We’re pleased to announce the Teams client for Linux is now available for preview. Please see details at https://techcommunity.microsoft.com/t5/Microsoft-Teams-Blog/Microsoft-Teams-is-now-available-on-Linux/ba-p/1056267.
Please check out the Q&A forum here – https://docs.microsoft.com/answers/topics/teams.html.
The most weird thing is,
MS Teams uses Electron to port webapp to Mac client.
Now MS points out it's hard to make a Linux client while Electron actually supports Linux.