For some time after the ascension, the disciples were together as a group, and would have drawn up accounts of the events (Luke 1:1).
I thought the conventional view was that they rapidly scattered to a range of places where they preached about Jesus. So by the time the first records we have were written they were mostly dead and hadn't been together for perhaps 30 or more years.
And even had they been together, why would you think that would result in an accurate account. I think that is extremely unlikely as they were sadly neutral were they. If you want an accurate account of a football match you don't ask a fanatical and passionate supporter of one team, totally caught up in the emotion of the match. For that person it was the clearest penalty in the world and the ref was blind for not giving it. No - you ask a dispassionate neutral, or if there isn't one better to get accounts from the supporters of both sides.
The bible is the equivalent of an account written by fanatical and passionate supporters of one team only, with no balancing view available whatsoever. It is partial and biased and therefore should be read with that is mind.