Hi, Arianna! Congratulations on becoming involved in the college application process - you have so many opportunities ahead of you! Choosing a college major can be overwhelming, especially when interested in various fields. If possible, I would recommend talking to professionals with careers of interest to you. Whether you post specific questions on this site or reach out to individuals in your area - ask them what they do on a day-to-day basis and how they got to where they are. Additionally, I've found personality tests to be useful in pinpointing certain characteristics often found in particular careers. Below I've posted a link to a free personality test that breaks down career paths and workplace habits based on your type.
Good luck with your research and know that it is okay to enter into college as undeclared! I wasn't sure what career I would pursue when I first started as a freshman, so my adviser placed me in a variety of classes. In doing so, I was able to slowly narrow down what I found interesting and what I preferred to leave in the classroom. In the end, I changed my major multiple times before landing on a Business major at the end of my Sophomore year!