Dear Thil nada,
Greetings!
Thanks for reaching out to this community.
Based on your description, I understand your query about how to retrieve or restore the channel.
Upon my investigation and tests, would you please kindly try below steps to restore an accidently deleted channel?
- Navigate to and hover on the teams which the deleted channel belonged to, click More options (three dots) > Manage team.
- In the Channels tab, expand the drop-down menu like in below screenshot and select Deleted.
- Click Restore button.
Note: Channels can be restored within 21 days of deletion, but no new channels can be created with the same name as the deleted channel within that 21-day window. Please kindly refer to Delete a channel in Microsoft Teams - Microsoft Support.
Thank you in advance for your understanding! Your patience and cooperation will be greatly appreciated. I hope all the best!