HELL in afterlife

My brother recently took his own life, and I’ve been consumed with guilt. I keep wondering if there was something I could have done to stop him. I think about the times I was rude to him because I was angry at him for having an affair and neglecting his children. I’m so confused, and I keep wondering if his suicide was inevitable was it somehow meant to happen, part of God's plan? I know it might sound wrong to blame God, but I can’t help feeling lost. I was told that if God’s not done with you, your suicide attempt will fail, but that doesn’t feel true now.

What makes me sad the most is hearing that people say those who take their own lives will go to hell. It seems so cruel after suffering so here on earth, to face more suffering in the afterlife. I’m deeply confused, devastated, and I miss my brother so much.