Name a contemporary(while Jesus was supposedly alive) account of Jesus outside of the Bible.
Why must it be outside the bible?
Do you wish to exclude any other historical texts that won’t line up with your preconceived, irrational conclusions?
There is no reason to exclude a reliable collection of historical texts, especially when it was written by eyewitnesses (more than one writer) during the time of OTHER eyewitnesses who could have refuted it.