My opinion on religion is that they all(Abrahamic)have the same element that consists being monotheistic and they generally go over the same historical topics. Quran claims that its the last book. How do i know if its not a book that was manmade? The bible is much longer than the quran. Like where does it stop at? What is wrong about The Bible? and why dont muslims belive in quran and hadiths instead of the bible?
Here are some articles you might find interesting:
The Quran and probability
https://mypercept.co.uk/articles/Does_God_Exist_home.htm
Errors in The Bible (there are many many more than these):
https://mypercept.co.uk/articles/errors_mistakes_bible.htm
https://quransmessage.com/forum/index.php?topic=2977.0