Disappointed is worse than angry. Angry, you can clearly tell that you did something as wrong and it doesn't make you feel bad. disappointed is when somebody tries to convince you that you just made a dumb mistake, and it just makes you feel worse because you feel like you let them down
context is: BR is my OC that kind of corrupts people and makes them villains, then she reformed and now she's a depressed bean who's just chilling in her domain "What's my purpose now", but I still immediately think "God dammit BR" when I make a new villain and I'm like "wait she's not doing this anymore..." so I thought this Meme made perfect sense for that