I recently tried to witness to a man whom had childhood trauma and even speaking to him about the love of God put him into a rage. He further said to me to look at all of the evil in this world and what happens to innocent children and good people. I have never met a man so full of rage and hate for God before. He was ashamed for coming out of the closet unwillingly and being exposed, after trying to hide being gay for many years. He said God never helped him or any innocent and abused children. Evil in the world and unanswered prayers seems to be the main reason why people hate God
They're an intellectual problem of evil that needs an intellectual response and an emotional problem of evil that needs an emotional response otherwise the response is probably not going to be as effective. For example, if someone is struggling with how God could let their child die, then they need to be shown love and be comforted, but giving them an intellectual answer probably won't help much.
If God were to take all of the possible causes of suffering in the world, line the up from least to greatest, and create a new world where He eliminated the greatest, then people would still complain about why God allowed so much suffering. God could keep going through that process until He eventually created created a world where the worst form of suffering that He allowed was stubbing your toe and still people would complain about why God allowed that much. So the question of why God allows so much suffering boils down to why God allows any suffering at all and I think that there are plausible reasons for why God allows that.
For example, the ability to feel pain is a gift because it lets us know when something is wrong. Leprosy does not directly cause people to have damaged limbs, but rather leprosy destroys someone's nerve endings, which removes their ability to feel physical pain. For example, if someone touches a hot pot, then our ability to feel pain leads us to yank our hand back, and perhaps get a small burn, but if someone who couldn't feel physically pain touched a hot pot and didn't know to yank their hand back, then they could end up with severe burns. Our if someone were walking a long distance without being aware that their foot was injured, then they could end up giving themselves permanent injuries.
God could even go so far as to create a world where people could only experience either joy or great joy and people would complain about why He allowed people to have the lesser experience. God could create a world where we lived in a stasis field with no change of experience, but there are plausible reasons for why God would want us to have a range of experiences.
However, if someone has gone through child abuse, then it might be a better approach to build a relationship with them where we show them love, give them comfort, and show them that we can be trusted.