Why do you believe there's no evidence Jesus existed? I believe there's evidence that Jesus existed, because of the date of the manuscripts. https://breakpoint.org/a-fictional-messiah/
The first century Roman Tacitus, considered one of the more accurate historians of the ancient world, mentioned superstitious "Christians," named after Christus (Latin for Christ), who was executed by Pontius Pilate during the reign of Tiberius.
Christianity is not a religion, it's a relationship with God. There are man-made teachings in Christianity like the prosperity gospel that have nothing to do with God.
The disciples wrote nothing - as far as we know - chances are that most were not literate if any .. we think possibly Mark was written by a student of Peter - and that would be as close as we get to the source. The fellow that wrote Matt came along after the destruction of the Temple .. and rewrote the story using almost all of Mark - and adds a few things. The stuff that comes later is removed further yet - sorry mate .. nothing from those who knew Christ.
The Apostle John wrote the Gospel of John. https://reasonsforjesus.com/why-everyone-should-believe-the-apostle-john-wrote-the-last-gospel/
To say that Christianity is man made because it fits the dictionary definition of a religion is semantics. https://www.merriam-webster.com/dictionary/religion Christianity is about having a relationship with God.
The first Christians were Jewish. Their beliefs were called the Way, not Judaism Christianity, because it sounds strange to word it like you are following two faiths in one, even if the two faiths are not mutually exclusive. Christianity and Judaism were one, in the beginning. The first Christians believed in between modern Christianity and modern Judaism. Whether they followed two religions in one is an endless genealogy-its not relevant. The same is true for whether Christianity is a religion. What's important is that it's a relationship.
God wants us to fellowship with like minded people, but that's different from manmade traditions that have nothing to do with God. https://www.merriam-webster.com/dictionary/religion
Christianity is by definition a religion. Why does this upset you? Your god is just as made up as Zeus
Fellowshipping with other believers doesn't make Christianity manmade or not a relationship with God. You are focusing too much on the semantics.
How does fellowshipping with other believers mean that Christianity is not a relationship with God? Some beliefs within Christianity are manmade, but trying to live out the teachings of Christ existed before any denominations existed. https://www.gotquestions.org/Christianity-religion-relationship.html
Highly unlikely - you should not run your mouth defacto about things you do not know - posting from those fundamentalist snake charmer sites as if they do not spew falsehood left right and center. John was thought to have been martyred along around the time of the others - and we near nothing about John after that. Surely Clement would have mentioned that the hallowed disciple John if he was still around - not a word - nothing from Ignatius. It is absurd that the early Church for some 40-50 years after the death of James - the only living disciple ..and hoards of early Christians were not recounting his every deed. and that just the beginning of the problems with John - try this link instead of those horrid lie spewing sites you normally post from. . http://www.earlychristianwritings.com/john.html