watercolour and ink on paper

Resentful

/rɪˈzɛntf(ʊ)l/

feeling or expressing bitterness or indignation at having been treated unfairly: "he was angry and resentful of their intrusion"

Let down
/ˈlet.daʊn/ fail to support or help someone as they had hoped or expected:...

Betrayed
/bɪˈtreɪ/ expose (one's country, a group, or a person) to danger by...

Angry
/ˈaŋɡri/ adjective  Feeling or showing...

Emotions Wheel
I have enjoyed working with the emotions I found in Plutchik, but there are so many more...