not all it's cracked up to be
It is disappointing, it does not live up to its reputation, as in The restaurant wasn't all it's cracked up to be. This term uses crack up in the sense of “to praise,” which survives only in this expression. [Colloquial; early 1800s]
Words nearby not all it's cracked up to be
not a hope in hell,
not a leg to stand on,
not a living soul,
not able,
not about to,
not all it's cracked up to be,
not all that,
not all there,
not anything like,
not at all,
not bad