Why is Ishmael so unhappy at the rehabilitation camp?

Ishmael is unhappy at the rehabilitation camp because he is still haunted by the traumatic experiences he faced during the civil war in Sierra Leone. The memories of violence, loss, and suffering continue to affect him emotionally and mentally, making it difficult for him to heal and move on from his past. The structured environment of the camp, while well-intentioned, may also feel restrictive and isolating for Ishmael.