small time

/ˈsmɔl ˌtaɪm/
adjective
  1. Unimportant or minor in influence, scale, or success; not very successful.
    • He started as a small-time musician playing in local bars.
    • She worked for a small-time publisher that only released a few books a year.
    • The small-time thief was caught stealing candy from a convenience store.