Unqualified
Part of speech: adjective
Definition: not qualified, ineligible, unfit for a position or task not elaborated upon, undescribed
Example sentence: Every job I took, I was deeply uncomfortable in terms of feeling unqualified. Every step, every risk I took, built confidence.
Incompetent
Part of speech: noun
Definition: A person who is incompetent.
Part of speech: adjective
Definition: Unskilled, lacking normally expected degree of ability.Unable to make rational decisions, insane or otherwise cognitively impaired.
Example sentence: Lawyers are the first refuge of the incompetent.