I have lots of questions and need lots of answers

I believe in God I believe in Jesus and rely only on him for my salvation. Unfortunately I struggle with trusting the Bible. My mind sees things that cause me to question certain aspects and I’m looking to see what others opinion or knowledge is on this. For instance……

John chapter 7:46-53. How did the author whether it be John or someone else, how did he know? How did the author know exactly what was said and happened between the soldiers and the Pharisees?