Theater: there's the most straight-forward jobs of being an actor or working behind stage. If you prefer the acting side, you could do things like voice acting, narration for audio books, working in film and such. If you like the hands-on stuff you may do makeup work, set building, prop or costume building. There are many other fields like video game design, photography, and such that need props and set work as well as voice acting.
Baking: I imagine there are small bakeries in your area that you could try looking into! Don't be afraid to talk to someone in your local bakeries about their job. You could start out by getting a nice starter job as a cook in a small restaurant to get ideas of what you really like or don't like.
Nature: there are so many opportunities here! If you like to really work with animals, there's always veterinarian work. This is certainly challenging though and will take lots of school. If you just like being out in nature, look into working for your local parks and wildlife. If you have national forests or parks, you could become a ranger going on trails, doing informational guide work, or just manning a ticket booth and greeting people.
The best advice I have for you is to take classes while you can to learn more and really see what you enjoy. If you have opportunities for internships or tours of places, give them a go! You never know what might call out to you. And sometimes it will take you some time. There's nothing wrong with starting off with something basic like retail work to help you get out there and give you some financial stability while you pursue your passions.
High school, college, and various career paths are designed to let you experience and experiment with things that intrigue you. This helps you figure out what you'd like to pursue more and what you'd rather avoid. In reality, the perfect or dream job might not truly exist – think of an ice cream taste tester with no calorie consequences (we did say DREAM, right?!). However, what matters is finding a path that brings you happiness and makes you feel like you're making a difference (if those are qualities you seek in a job).
So, just take life as it comes, and you'll eventually learn what works for you and what doesn't. Don't worry too much, and you might find that the answers will reveal themselves without you having to search too hard. Best of luck!
(1) Start with an interest inventory, which will provide a list of careers that people with similar interests have enjoyed.
(2) Next, take a personality test that connects your personality type with careers that others like you find satisfying.
(3) Once you've narrowed down your interests, seek out classes, workshops, camps, volunteer work, internships, or apprenticeships to gain experience in those fields.
The links below offer some helpful online inventories.
Wishing you success in your career search.
Interest Inventory: https://www.mynextmove.org/explore/ip
Personality Test: https://www.16personalities.com/free-personality-test