Provided are three books
available here in the links below to read online for free by three mainstream biblical scholars discussing each of the three issues in my statements just above. I'm not a liar, and don't really appreciate being called one, but I am willing to believe you were simply ignorant of these issues. And you don't have to agree with their conclusions, I just want to show you that I am not making shirt up and that these are indeed well known issues of mainstream biblical scholarship.
First up -
The Synoptic Problem by Mark Goodacre, a Professor at Duke University's Department of Religion. This discusses how the Gospels copy from each other, a well known fact among Biblical studies (aka "the synoptic problem").
https://archive.org/details/synopticproblemw00good
https://en.wikipedia.org/wiki/Mark_Goodacre
Second -
Forged by Bart Ehrman, the Professor of Religious Studies at the University of North Carolina. I'm not too much of a fan of Ehrman, as I think he's kind of dogmatic about sticking to the mainstream consensus, but this book is worth reading, providing a survey of which books are not believed to have been written by whom they claim to be and why.
https://archive.org/details/BartD.Ehrman-ForgedWritingInTheNameOfGod-WhyTheBiblesAuthors
https://en.wikipedia.org/wiki/Bart_D._Ehrman
Finally -
The Mythic Past by Thomas L. Thompson, former longtime Professor of Theology at the University of Copenhagen, and also probably one of the most important biblical scholars of the last fifty years. This book discusses how evidence leads to conclusions that the stories of the OT are based in literary myth as opposed to being historical.
https://archive.org/details/TheMythicPastBiblicalArchaeologyAndTheMythOfIsrael
https://en.wikipedia.org/wiki/Thomas_L._Thompson