A phrase that could refer to the internal flaws or weaknesses of an individual or object.

आंतरिक दोष या कमजोरियां

English Usage: She was always reflecting on her inner fault face, trying to improve herself.

Hindi Usage: वह हमेशा अपने आंतरिक दोष चेहरे के बारे में सोचती रहती थी, खुद को सुधारने की कोशिश करती रहती थी।