Justified Imposter Syndrome
Almost anyone starting a new job has at least one moment when they ask themselves, “wait, am I even qualified for this?” This person had a similar thought, but soon it became quite obvious that the answer to that question was “no.” In fact, they hired this person for the entirely wrong position.

It became painfully obvious that management had messed up the hiring process when this person had to be trained by junior employees on the most basic things. Luckily, this person didn’t want to spend the next months faking it, so they resigned at the end of the day. Try a little harder next time, management.