A good landing brings the aircraft to the ground at minimal airspeed so that at touch down, it is at or near the stall. The landing process is to get the aircraft to lose altitude and slowdown, simultaneously. Easier said than done, since diving the plane to the ground to lose altitude will also build air speed. So, in the landing pattern, the downwind leg is the place to set up this "slowing and lowering" process so that when the plane is at the turn to final, it is where it needs to be for a smooth, wings level, minimal control input descent for landing.

For the landing set up, remember that elevator controls speed and throttle controls altitude.

From your description, it appears you came in at too slow a speed, at too great a sink rate so that when the plane touched down, it bounced due to the rapid sink rate but was no longer flying (stalled) and fell to its crash.

The sharp turn to bleed off air speed certainly does do that, but it's difficult to gauge how much speed has been lost. Plus, you need to have enough speed to maneuver at the same time lose enough speed to land the plane with out damage. This type landing approach is a bit more challenging. It looks cool when it doesn't destroy the plane.