I don't know how much experienced you are with a digital camera. Don't even know you have any experience with any camera. But the modern camera's are capable of taking sharp pictures, is used right.
But to let the camera do its work correct it should be setup correct and used correct.
Let me explain.
Most camera's have a possibility to make pictures in automatic. (dail on the green camera symbol) But still there is more to do.
Every camera has a point (or more points, that are used to focus the picture. You can use to put that point where you want the picture be in focus. Most of the time that would be the centre of the frame. But the camera can't focus in theoretical a blink of an eye. It needs some time, to find the focus by differences in contrast, or patterns. A DSLR sometimes can focus in less then a tenth of a second. Compact camera's could need up to one second, before they are in focus.
So try to setup the camera to automatic. Place the focus marks (as described on page 6 of the manual. Then press the shutter realise button half and look if the camera can focus. If it can't, release the button and try again. When the pictures is in focus, then you can press the button fully.
On page 33 of the manual, there are different modes of focus. be sure you use the mode you chose in the correct way.
link to the manual I refer to.