Thank you for your feedback. This feature is still on the backlog, and planned for later this year.
In the meantime, you can try using the keyboard shortcut to toggle mute (Ctrl+Shift+M). For more info on keyboard shortcuts, visit https://support.microsoft.com/en-us/office/keyboard-shortcuts-for-microsoft-teams-2e8e2a70-e8d8-4a19-949b-4c36dd5292d2.
This feature team has been aware of this request, and it is under review.
An error occurred while saving the commentAnonymous commented
This really needs to get fixed