One really must have been given the gift of love for God and faith in God in a world that's full of evil. Without that prior gift, it is well nigh impossible or unlikely that anyone would have those attitudes. Not everyone receives that gift or can live with it successfully once it's given.
Of course, you can also focus on the beauty and goodness in the world and it will partially negate the evil that is also present. Not all of life is evil unless we only focus on that side of it. Those of us who believe in God, in spite of the imperfections of living in an evil world, must really want to or need to continue believing in God regardless of the things we see and hear.
Some people would say either there is no God and all this evil is a mystery which humanity is partially responsible for. Or they would say that there is a God and he allows the evil to continue when he could very well stop it tomorrow. Or they would say that he might want to stop the evil, but is not able to do so.
Perhaps that's why some churches are full of people who want to reassure each other that in spite of the evil in life, past and present, it's still okay to believe in God and to believe that he wants the best for us at all times.
Regarding the Bible, I'm finding that I have to focus more and more on the positive parts of the Bible, the promises of hope and love while at the same time not dwelling on the negative and, sometimes unpleasant passages one sometimes comes across.