The thing is, for a poem about emotion, there are absolutely no emotional qualities to it. You see the after effects of the emotion --hatred, jokes, crying, etc. -- but there is nothing emotional to set those things off. Better would by the feeling behind being hated or not smiling. Description and looking at the root of what you're writing about is the way to go. Think a little more on the idea of dejection. I like looking up definitions and synonyms and seeing if they match what I think the word means. Maybe this will help?
In terms of the form, don't let the structure take over the content. It devalues what you're trying to say. As such, bolding the first letter of each line to call attention to the acrostic is unnecessary, and the space between each line makes each line seem even more disconnected to what's around it.
