You have evidently not studied the many and varied attempts to discredit them. I would suggest you do so. It’s very enlightening.
I have read several such attempts, which has led me to search for historical evidence, which is somewhat hard to find. That is why I am asking if you can provide authentic, reliable, information documenting who wrote the gospels, when they were written, and where they were written.
There are a number of sites that do a good job explaining how we got the New Testament: