Might try the Web Client...
Safari 14+1:1 calls not supported. Group calls fully supported.
Video: Fully supported
Sharing: Fully supported Meetings: Fully supported
Video: Fully supported
Sharing: Fully supported Safari 13.1+1:1 calls not supported. Group calls supported with full audio support.
Video: Incoming only
Sharing: Fully supported Meetings are supported with full audio support.
Video: Incoming only
Sharing: Fully supported Firefox, the latest version plus two previous versionsNot supportedMeetings are supported only if the meeting includes PSTN coordinates. To attend a meeting on Firefox without PSTN coordinates, users must download the Teams desktop client.
Video: Not supported
Sharing: Incoming sharing only (no outgoing) Safari versions before 13Not supportedMeetings are supported only if the meeting includes PSTN coordinates. To attend a meeting on Safari without PSTN coordinates, users must download the Teams desktop client.
Video: Not supported
Sharing: Incoming sharing only (no outgoing)
Safari is enabled on versions higher than 11.1 in preview. While in preview, there are known issues with Safari's Intelligent Tracking Prevention.
1 To give and take control of shared content during sharing, both parties must be using the Teams desktop client. Control isn't supported when either party is running Teams in a browser. This is due to a technical limitation that we're planning to fix.
2 Blur my background isn't available when you run Teams in a browser. This feature is only available in the Teams desktop client.
3 Teams meetings on browsers are limited to a single incoming video feed of active speaker.
4 Edge RS2 or later doesn't support sending real-time audio and video traffic through HTTP proxies.
Note
As long as an operating system can run the supported browser, Teams is supported on desktop computers. For example, running Firefox on the Linux operating system is an option for using Teams.
For mobile operating systems, we recommend that you run the Teams app, available from the Android and iOS stores. Running Teams in a mobile operating system is supported, but many features are unavailable.
The web client performs browser version detection upon connecting to https://teams.microsoft.com. If an unsupported browser version is detected, it will block access to the web interface and recommend that the user download the desktop client or mobile app.
Get clients for Microsoft Teams - Microsoft Teams | Microsoft Docs