The Titanic was going too fast for the conditions. There was no moon that night so they relied on visual sightings. They ignored ice warnings and Captain Smith forged ahead at about 22 knots. There are a lot of what ifs and would of, could of scenarios.
At that time, there was no universal steering. So on some ships, turning the wheel right - turned the ship right. On other ships, turning the wheel right - turned the ship left. There's debate about whether the person steering panicked and actually turned the ship INTO the iceberg, instead of away from it.