What is the version of your safari browser?
I tested in safari version 14.0. When I try to open Teams web client(https://teams.microsoft.com), it shows ”Teams is in preview in Safari” as below. This is because when an unsupported browser version is detected, it will block access to the web interface and recommend that the user download the desktop client.
When I join a Teams meeting by the link in safari, it could join the meeting properly.
In conclusion, it recommends you download Teams desktop client.
If I misunderstand your words, please give us more information. Thanks for your understanding.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.