Ex 14:10-12
They were totally afraid. They cried out in terror to GOD. 11 They told Moses, "Weren't the cemeteries large enough in Egypt so that you had to take us out here in the wilderness to die? What have you done to us, taking us out of Egypt? 12 Back in Egypt didn't we tell you this would happen? Didn't we tell you, 'Leave us alone here in Egypt — we're better off as slaves in Egypt than as corpses in the wilderness.'"

After ALL THE MIRACLES IN EGYPT they were still afraid of what they could see.