There are certainly people who, unfortunately, despite all the good legal advice they may have received, plead guilty when they are innocent. Sometimes there are quite exceptional circumstances, without mentioning specific cases. You may hear witnesses talk to you about specific cases in which a person pleaded guilty when no offence had been committed. For example, in circumstances where a parent is criminally charged as a result of the death of their child and there are other children in the family, sometimes the parent feels trapped and agrees to plead guilty in the hope of having a lighter sentence to serve.
On October 31st, 2023. See this statement in context.