How do I figure out if I’m straight or something else?

You can try to analyze your feelings and emotions, imaging yourself with different people of different genders, fantasizing, and see how that makes you feel. It's important to be very honest with yourself and not to think about anything like what people would say, there is only you and your feelings. After all, whatever you'll turn out to be is completely ok! You can also try to get in contact with people of different orientations and talk to them about their feelings and how they found it out. It's a different path for everyone, but exchanging experiences can be enlightening.