Religious trauma is a wide and varied catch-all. The laundry list is long and varied.

Authoritarianism: Religious groups or leaders imposing strict rules, controlling behavior, or demanding unquestioning obedience can lead to feelings of powerlessness and fear.

Shame and Guilt: Religious teachings sometimes instill deep-seated feelings of shame or guilt for not living up to certain standards or for questioning beliefs.

Fear of Punishment: Belief in concepts like eternal damnation or punishment for sins can create significant anxiety and fear.

Rejection and Isolation: Leaving a religious community or questioning beliefs can lead to rejection or ostracization from family and friends within that community, causing feelings of isolation and loss.

Identity Conflicts: For individuals raised in religious environments, questioning or leaving those beliefs can lead to identity crises as they navigate who they are outside of their religious framework.

Abuse and Trauma: Unfortunately, some religious contexts can facilitate or cover up abuse, leading to deep psychological wounds.

Cognitive Dissonance: Holding onto beliefs that conflict with personal values or evidence can cause significant mental stress.

Loss of Faith: For individuals who experience a crisis of faith, losing their religious beliefs can be deeply disorienting and distressing.

I am most likely missing a few categories. There are several great articles on this. But in the end, while religion can contribute to many problems and I had many of them being a Catholic Teenager when I was younger, but many were also from a failed marriage, children when I wasn't ready, confusion over sex even as an adult. This is a real thing, but isn't the entire thing.