The Reason I used petezah is because others don't work without the actual hub/site being open but petezah already had an iframe setup so we used it instead.

If you are searching for any unblocked site use this: https://getwebsiteclones.vercel.app/ it finds clones of that same site you entered

The way I find these is I either view their source or inspect and get the src from their iframe which include "#embed=" or "?url="