Is God trying to deceive us? If you looked and studied you won't find any evidence that there was a global flood. None. Nada. Why would God make a huge flood and then hide all evidence of it?
As an aside, there was a time, a few million years ago, when the Mediterranean almost completely dried up. Then later it was flooded when a channel appeared at Gibraltar. It must have been a spectacular sight with mile-high water falls and rapids. Strange that didn't get mentioned in the Bible?
In my view, the Bible is first and foremost a book of theology and only secondarily is it a history book. The Flood is just one 'history' it invents for its theology.