Braces and aligners are different systems for moving teeth, and each has its advantages and disadvantages. Aligners, for example, can break the desired movements down into stages more precisely, and in some cases this gives better anchorage. They also raise the bite, because their material covers the biting surfaces of the teeth as well, and they can close some stubborn gaps or move a group of teeth over a certain distance. If one of these advantages of aligners is used to overcome a limitation of braces in moving your teeth, then aligners may be able to do something that braces can't do, or can only do slowly.
This answer is for general information. Your own case needs an examination by an orthodontist.