There still remains some considerable disagreement in our societies today on this question, Believers have no doubts ( don’t they??) while atheists largely believe he is a work of fiction with no basis in truth.
John Dickson an Australian historian has gathered all the historical evidence, as opposed to hearsay, and concludes Jesus Christ was definitely a real human being. Not only is this his ‘opinion’ it is also agreed upon by those who study history, as opposed to those who study ‘religion’ or religious history.
His current work presents the evidence that Historians agree upon concerning this person from our past. It makes for quite interesting reading/viewing.
Dr Dickson makes no attempt to add to the fantasy around Jesus by making any claims concerning the truth or otherwise of the many ‘Miracles’ people claim He performed or as to the veracity of the claim Jesus was the Son of God and was also God in human form, but investigates and presents the known facts as they are currently available to us through Historical record.
Any who refuse to believe in the facts concerning Jesus Christ mentioned a few times in the Holy Bible and in The Qu’ran would do well to read/view this to check their idea of ‘reality’ as it may well be a little inaccurate at present.