I think it's perfectly ok not to be able to pinpoint exactly where you are on a scale such as that of gender or sexuality. Why do we need to define it categorically anyway?

Cis and straight people don't go around identifying themselves and don't need to spend time thinking about it the way non cis, non straight people are forced to by society and its still fairly rigid, binary standards. Being the default(as society defines it) requires little thought, you mostly get to just be, to exist.

If you're outside those boundaries, defining yourself often becomes something very important and I think that in itself is, at least in part, proof of the stigma and discrimination still surrounding anything outside the binary, because one part of identifying yourself as "something"(insert preferred gender or sexual identity here) is in part a way of saying you're not abnormal, of validating your experience, justifying and providing proof of it being real and legit not some mental illness or rebellious act.

Personally I think most people, certainly if not for society's restrictively guiding hand, aren't 100% straight or 100% cis. Especially when it comes to gender identity, which is mostly a social construct, there's no such thing as being all man or all woman because apart from biological sexual characteristics, everything we ascribe to one gender identity or the other is a construct. There's no such thing, for ex, as men's or women's hobbies, favorite colors or favorite clothing style because those things don't occur in nature, they're constructs of society and society simply leads most people(humans are largely conformists) into fitting the mould it decides they should fit into according to their genitals. Hormonal differences would not lead to such big differences at all. We are all humans and there's a wide scale of how you can experience gender.

Sexually too, I'd reckon most people would not be 100% straight if society was not homophobic and binary in this as well. It's been shown that women(who are also arguably less constrained by homophobia because homophobia is highly sexist and deeply rooted in the fear of emasculation, and who are also allowed to have very close intimate platonic or almost romantically platonic relationships with other women) have a much more fluid sexuality and high rates of some type of sexual experimentation with the same gender, even simply for the sake of curiosity, like a lot of teenage girl.

So, long story short, I think it's enough if you know you're not entirely straight on entirely cis, just explore that, it's very valid either way.

I'm very non-binary in the way I feel and act, without wanting to transition. Also, although I'm what society perceives as a very masculine woman, I'm attracted on average to men more than women, and I would say I am pansexual.