Is it possible for braces ro shift your teeth up?

Yes: Traditional braces can move your teeth in almost any direction. Shifting them up is possible, but if they need to go up a lot, sometimes jaw surgery is necessary to get the best result.

Yes: Orthodontics can move teeth in any direction. Some movements are more difficult than others.

Yes: With braces (and sometimes surgery + braces) teeth and jaws can be repositioned in all three planes of space. With braces average more than 90% improvement. With clear aligners average about 43% improvement. Braces do much better at "up and down" than aligners. You can have a straight, attractive, functional smile with proper orthodontic care. See an orthodontic specialist.