Do you agree with me?

So my mom is putting me into confirmation to confirm I believe in god.But heres the thing.At times I believe in him but at others I dont. I believe in him when something great happens like me surviving this head on car acciednt i had with my sister, or when i was hit by a car and walked away from it, or when i recently overdosed and im still around.but then something happens that makes me question him. Like when four of my friends died. It doesnt make sense.