I can't see other people's cameras, but other people can.

Hi, I'm Sergio, an Independent Advisor and Microsoft Team customer just like you, and it's a pleasure to help you.

Maybe you use the browser to connect to your meetting?
You must to keep in mind the limits, specifications and other requirements that apply to Teams, like the supported browser list.

https://docs.microsoft.com/en-us/microsoftteams...

The Team's funtionalities can be affect for these causes.

Greetings.

Hi Sergio,

Thank you for responding.

Actually, I did not use the browser to connect to any meeting that I had. I always use the Microsoft Team app (my computer system is windows).

This problem happens recently (and continued). I did not face it before.

Thank you.

Hi Zyad.

When you join a Teams meeting on the desktop or mobile app, you'll see the video streams of up to nine other people on your screen at the same time. This is the default Gallery view.
Meeting window showing 9 different video streams at once

Note: To provide the best possible audio and video quality, we might decrease the number of videos you're able to see at once if you're running a little low on bandwidth or computer memory.

You have several different video layouts to choose from, depending on the size of the meeting, where you join from, and the number of people you'd like to see on your screen at once.
If you need a meetting with more of 49 persons you must use Large gallery.

using Large gallery.
Enables you to see the videos of up to 49 other people at once. This option is available when at least ten people have their cameras turned on.
Large gallery view showing 49 videos at once

Note: If no one is sharing video, Large gallery won't be selectable in the menu.

Note: You'll need to turn on the new meeting experience
to use Large gallery, Together mode, and Focus. 

You can find this and other informations about the topic in:
https://support.microsoft.com/en-us/office/usin...