Hi there!
Wow, this poem is amazing!! The tone of your poem is sad, dreary, and alone. I am sorry if this is truly how you feel, as no one should have to feel this way. As for similes, I found "loneliness is a void," "and like the moon, one cannot shine by themselves." Unfortunately, I could not find any hyperboles or metaphors. Awesome poem, though! Thanks so much for sharing!
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!