Telescopes can be very 'touchy' instruments to use. Not only do they magnify the image but any movement used to point them as well.
If your telescope has a finder, ( a seperate part to facilitate aiming), make sure it is properly aligned but aiming it at a distant stationary object that you have first identified and centered in the telescope.
It is easier to first locate an object of interest using a lower power. Once you are confident that you have the object centered carefully change to a higher magnification. It helps to know from experience approximately how much of an adjustment of the focus is required from one eyepiece to another.
Jupiter, as you may know, is currently visible in the southern sky at onset of darkness. With a low power you should be able to identify it by the array of several of its moons along a straight line. These will change position somewhat from one night to the next.
It is a big jump from spotting the moon to capturing a planet with a telescope but "practice makes perfect". Try not to let frustration or aggravation set in and ruin what should be an enjoyable experience. Starting with the lowest power available will help insure progress in learning to aim your telescope on small objects.