I agree with some of what has been stated. If everything in the shot is blurred, that probably means camera shake, which means that you were moving (you need a tripod) or else your finger moved the camera at the shot time. If only the subject is blurred, then chances are that your camera saw some light, and there was no flash, so it shot with a slow shutter speed, and the subject was moving during that large fraction of a second. A tripod will not help so much for the subject only blur.
What are your alternatives? One is to turn on the flash. The flash goes very fast, and there is seldom much subject movement during the flash period. Another idea is to manually control the camera's ISO setting to be a higher number. That means more sensitive to light. That means that the camera can pick its shutter speed as it did before, but it will pick something quicker, which means less subject movement during the shutter period.
This is a harsh alternative, but that is the reason why some people pay good money for good cameras with big lenses. Those allow more light to reach the sensor, and the ISO settings can be pushed very high. But, if you don't shoot that sort of thing too much, it may be overkill.