in this video describe about how to delete own discord group
how to remove own discord server
To delete a server tag in Discord, you will need to have the "Manage Server" permission.
Open the server settings by clicking the server name at the top of the Discord client and selecting "Server Settings"
Select the "Tags" option from the left sidebar.
Locate the tag you wish to delete and click the three dots to the right of it.
Select "Delete" from the drop-down menu.
Confirm the deletion by clicking "Delete" in the pop-up window.
Note: If you don't have the "Manage Server" permission