Hi Vanessa_909,
I'm Nik, an independent advisor here to assist you with this.
If you don't see the "Turn on new meeting experience" settings in the general setting of your profile then this has been removed in the latest Teams updates.
The plan was to keep the "New meeting experience" by default as most of the major meeting features(e.g. breakout rooms, video views etc.) only works when "new meeting experience" is enabled.
Also, as per the techcommunity blog,
"In the near future, we’ll turn the experience on by default. Eventually, the setting to turn it on and off will go away."
For more, see https://techcommunity.microsoft.com/t5/microsof...
Regards
Nik