You can leave a public or private space at any time unless you're the only space admin. In that case, you’ll need to add another admin to the space first. In order to leave a locked space users must ask the locked space admin to delete them from the space.
Space admins receive Inbox notifications when users leave the space.
Navigate to the space you want to leave.
Click the gear icon 1 in the upper-right corner.
Select Leave space. 2
You’re no longer a member of that space. Your profile picture disappears from the list of space members. The space also disappears from your Home page.