I agree that certain things do test my faith but so far I have always found a doorway in that situation where I see God in it.
I follow a Christian woman from NI on Instagram called Fiona Bishop. I had been following her for a while and she went quiet for sometime. She then came back online to say that her 19 year old son went to sleep one night and just didn't wake up. He had made the choice to be baptised three weeks before and they were all on top of the world. Watching her videos since his death had been humbling.
She says that she feels like she wants to praise Jesus even more because its through him that she will be reunited with her son one day. She trusts that God took her son for a reason that she doesn't fully understand but that his joy in the arms of the Father surpass any earthy provision she could ever have given him. She is sharing her grief journey very candidly and openly. He only died in April or May but she still says that God is good. Even I struggle with this but I remember that plenty of Christians have endured terrible tragedy but their axis of belief is that God is with them amid the pain as a comforter, as opposed to having anger at him for not stopping it, although many do have fleeting moments of anger too. Jesus said 'in this life you will have trials and tribulation, but be of good cheer as I have overcome the world' (paraphrasing from memory).
Some others take the view that we live in a fallen world with pain and suffering built into the experience and that God uses the evil for good. That its better to endure the agonise of life with God's comfort and protection than without it.
When I think of the cross Jesus died on, i also think about the intersectional nature of those two pieces of wood. The horizontal meeting the vertical and how so many opposing themes co-exist in one moment. Humility/glory, God/man, human/divine, sorrow/joy, life/death, etc. I don't mean in a dualistic sense, but in terms of how for the Christian, it all comes together under Christ. For me, it isn't a vague 'everything happens for a reason' kind of platitude, but just a much deeper tapestry and when I lean into it, some kind of spiritual treasure is underneath it. Some I experience in the here and now and some will be stored up for me in eternity.
Being Christian can be incredibly difficult at times, I won't lie, but there is such weight to it too. I have wanted to turn my back on it when the going has got tough (and it has) but I always come back to it because I feel a deep sense of truth attached to it that I can't turn my back on, even when I try.
Anyway that's more waffle for you but just to explain my limited Christian experience of and response to suffering in the world.
And oh my goodness, yes! If I said I was going to be any other faith system nobody would have bat an eyelid. You do not grow up in a Northern Irish Catholic home and become and teetotal Born Again Christian! I do suspect that I would have invited less disdain if I'd stepped into functional alcoholism and started chanting Hare Krishna 😄