Hey, so I just want to give my perspective as someone who's a cis woman and bisexual.
I think that most cis people don't feel jealous of people of the other gender, or wish they had physical features associated with another gender. That might mean you're trans, but it might not. It's okay to not be sure. It's okay to "try on" a label, in a safe space and identify a certain way, and then decide "no, that doesn't fit me". We're here to be this space.
There's a lot I could say here that I'm sure someone else has said better, but something I wanted to highlight is when you said "I don’t think I would have major issue just living outwardly as just a dude, except maybe future regret for not trying to be who I possibly want to be." Transness may seem to be shaped by gender dysphoria, and whilst I understand why feeling dysphoric is an important part of many trans people's experiences, I think it is too easy to slip into a trap of "oh, I guess I could live like this" and resign oneself to misery. However, there's nothing quite so beautiful as seeing a person experience gender euphoria, whether they're trans or not. I want you to lead the best life you can, and I hope you are able to be supported in finding out what that means for you.
You don't need to have any answers or labels that fit right now, or ever. Whatever your gender identity or sexuality though, you are welcome here.
Gender does end up feeling very linked to sexuality in complex ways. I'm cis, but my gender presentation definitely varies depending on whether I'm dating a woman or a man.
I had a partner who came out as trans while we were dating: when we got together, she identified as a straight man, but after transitioning, she identified as bi. She said that she couldn't really feel attracted to men when she was imagining herself as a man, making out with another man, but as a woman, she felt more able to explore that part of her sexuality.