disheartening

/dɪsˈhɑrtənɪŋ/
adjective
  1. Causing someone to lose hope, confidence, or courage; discouraging.
    • She found the lack of job opportunities disheartening after months of searching.
    • The team's fifth straight loss was disheartening for the fans.
    • It was disheartening to see the abandoned park covered in trash.