One can give a false image of themselves by various ways, such as pretending to be careless or unfocussed, or otherwise appearing overly meticulous to intimidate new players. This could be using the way one is sitting, or their facial expression or language, etc.
Also sometimes even losing some low value hands and appearing distressed just to give a false impression of one's playing strategy.
So are there like some common or long-drawn strategies that can be used to fool players and use tactics that go beyond just the choices made on the table.