Can you figure out your orientation without actual experience?

I'm 22 and still a virgin mostly because of my confusion. When I watch porn I can get aroused by pretty much anything except for gay guys for some reason, but i usually watch straight porn/solo/lesbian with the same arousal results.The difference is how I feel when I watch it, if I am watching lesbian porn I usually fantasize that I am one of the girls and I feel really involved in it and overall mentally and physically excited, when I watch straight porn I get the arousal but I feel disconnected from it and don't really like to imagine that I'm the girl . Also when I masturbate I only think about sexual contact with a girl.

Besides the porn stuff I am attracted to girls and always check them out/ want to be close to them and want to kiss them, my first crush was my best friend in high school, but I'm confused if I like guys or not, most guys don't really effect me that much but sometimes if a guy is good looking or really nice I'll get nervous around them and evaluate them I'll think things like " would he make a good boyfriend" but when I think of them as a potential boyfriend or sexual partner I feel weird almost like I'm a different person and it feels a little wrong/off.

Sometimes I think of myself as a lesbian but getting nervous around those guys throws
me off and I start doubting that I can actually be a lesbian and I'll think I must be bi and I feel like I start all over again with questioning myself, and I also doubt myself because I don't have any experience and it's hard to find girls to try things with cause of the area I live in (small southern town.) Is experience the only way to know if I'm actually a lesbian or bi? Just looking for feedback can't really talk about this with anyone I know.