I just love music and I want to play so many instruments, but how I would someone figure out what instruments they can really shine with and find the ones that really fit them?

Just go to a music store and play around with some of the instruments. Find friends that have different instruments you can try. If you go to a school you can sneak into the music room and play some stuff as well. Also think about what instruments you pay attention to most while listening to music. Then you can decide on what instrument you want to actually buy.