What exactly makes you so afraid? I'm an airline pilot and I wouldn't be able to go to work if I thought there was any danger to me. I'm aware that planes do crash (I've had a lot of training in the causes of accidents and how to avoid that kind of thing!) but I am more concerned about my drive to work along the motorway in terms of potential danger.
Although you may find the movement of the wings worrying, they are designed with tremendous flexibility. Rigid, brittle things are much more likely to break under pressure than flexible things. The wings of my Boeing airliner have been tested over and over again - they are very strong wings and the movement in them is all part of the design.
As for the bounciness of the plane, imagine the plane is more like a little boat on waves. It's designed to be there, it's not bothered by the waves. No matter what the waves do, a boat is designed to ride over them, and although it may feel bouncy, it's just riding over them. There are waves in the air, changes in wind direction, lots of things that can cause movement of an air mass that will cause the plane to bob about. It's not a problem to the plane, it's very strong (as I've already said.) It's meant to be up there. The aerodynamics of an aircraft mean that it wants to fly. It's happier up in the air. The biggest problems with planes don't happen up in the air, no matter how much they bounce around. The ground is the thing that is most likely to cause damage to a plane. As pilots we train and train again to practise take offs and landings in all kinds of ways - what happens if the wind changes direction, what happens if an engine stops part way through take off, or if you hit a bird, or if the runway is slippery because it's snowed. Lots of things we train for, so that we are prepared for all kinds of situations.
Anything you want to ask, go ahead, and I'll try to answer.