be found lacking

But that also means that it’s often going to be found lacking in individual cases.

From The Guardian ● Dec. 13, 2019

This has meant that, while weakness has often compelled them to endure being lectured, criticized and to be found lacking, they have always chafed under such a censorious regimen.

From New York Times ● Jul. 16, 2013

Simaquio signified his desire "to be … the friend and vassal of the king of Castilla, and to have perpetual peace and friendship, and that he would never be found lacking in it."

From The Philippine Islands, 1493-1803 — Volume 02 of 55 1521-1569 Explorations by Early Navigators, Descriptions of the Islands and Their Peoples, Their History and Records of the Catholic Missions, as Related in Contemporaneous Books and Manuscripts, Showing the Political, Economic, Commercial and Religious Conditions of Those Islands from Their Earliest Relations with European Nations to the Beginning of the Nineteenth Century by Emma Helen Blair

On neither point would she be found lacking.

From Linda Tressel by Anthony Trollope

The shadows of life's evening were gathering around her, and heart and flesh beginning to fail, but no efforts of charity or mercy might be found lacking.

From Elizabeth Fry by Mrs. E. R. Pitman