Controlling settings, permissions, and membership within Teams and channels
Hi lisa_6313 I'm Sergio, it's a pleasure to help you.
You should keep in mind the quantity limitations in Teams.
- Number of channels per team 200 (includes deleted channels).
- Number of Private channels per team 30 (includes deleted channels).
Source:
https://docs.microsoft.com/en-us/microsoftteams...
If the limits aren't passed, you can try to use the Teams web app to compare the result.
Greetings.