"Mying fault" can be replaced by various synonyms that convey a similar meaning. Some suitable options may include words such as personal error, mistake, blunder, misjudgment, or oversight. These terms refer to a failure or fault that is attributed to oneself rather than external factors. Additionally, words like fault-finding, self-blame, self-criticism, self-doubt, or self-incrimination may also be used to describe a tendency to place responsibility or fault on oneself. Choosing the appropriate synonym to use in a given context depends on the tone and intended meaning of the message being conveyed.