uncompelling

/ˌʌnkəmˈpɛlɪŋ/
adjective
  1. Not interesting, exciting, or convincing; failing to capture attention or persuade.
    • The museum exhibit felt uncompelling, with dull displays and no interactive elements.
    • The movie's plot was so uncompelling that I fell asleep halfway through.
    • Her argument was uncompelling and failed to change anyone's mind.