Express 'nobody' or 'no one' in a negative sentence.
だれも + Verb-negative form (ないです), だれも + い-Adjective-negative form (ないです), だれも + な-Adjective-negative form (じゃないです)
Long explanation:
The grammar point だれも~ないです is used to express the idea of 'nobody' or 'no one' in a negative sentence. だれも is followed by the negative form of a verb or adjective, often using the polite ないです form.