Sex is what you're born as, physically, Gender is what of those sexes you feel most comfortable with, what you feel you physically are.(SEX PLAYS A VERY BIG, IF NOT NEARLY ENTIRE PART IN GENDER MIND YOU) Now, see, I don't think that there are 72 genders or however many on the "Gender Master List" there are. Something such as being "fiery and outbursting" isn't a gender. It's a personality trait, and I feel that a lot of people mix up, or use their personalities as "gender", which isn't correct(and really gives people who do have gender dysphoria, etc a bad name at times). Sure some people can feel like they're in between male and female, or neither at all, which is perfectly fine, whatever I don't really care. I do believe though, that mainly, there are two genders, male and female. Traits associating with them do exist, even if one can have the trait of the opposite, that's perfectly fine. Sure, you can identify as in between or neither but that's still based upon the male/female spectrum. But of course, having these traits doesn't mean you're one gender over another, if you have feminine traits as a guy but are still comfortable being a guy, then there's no problem with that, it doesn't mean you're trans or androgynous or whatever, it's whatever you're comfortable with. Note, when I say that I mean for everyone. I don't agree that there's 72 or whatever genders, I don't think using your personality to make your "gender" is necessarily right, nor do I think doing it for attention is right either(That's just insensitive to people who have actually had gender dysphoria.) I learned to go with what I'm most comfortable with when my ex not only thought but tried to make me into a woman. And of course, I nearly lied to myself. I nearly lied to everyone and nearly potentially became someone I knew I wasn't. I then realized that, all of this gender stuff being forced on many, and people being guilted for being cis, or male, or heterosexual, it was all a load of bull. I felt that way before but that's when I realized that it's just as bad as hating anyone else. Hating a man for being a man, who's comfortable being a man is absolutely awful, just as hating a woman for being female is wrong.
Sure, my opinions aren't agreeable with everyone. No, I don't think there's 72 genders, but I don't care what you do as long as you're not shaming others for not doing what you do, or you doing this stuff for attention, etc. I'm scared that people are lying to themselves for attention a lot of the time. Sure some people may have real, legit feelings but I'm still scared that some people are going to lie to themselves or be forced/manipulated into being something they don't really want to be. I'm scared that some of this is going to go too far, I'm scared that...Well, I'm just scared that sex and gender in general are going to be thrown out the window. I'm scared people are going to be shamed for being cis men or cis women.(They already are, especially men from what I've seen)
TLDR Gender is a mental thing, there's mainly two but you can be others, and people won't agree with my opinions but oh well.
Mainly, I just want everyone to be happy with who they are and with eachother. It's not possible to be perfectly like this, but...People just need to know what's right and wrong sometimes, and what they're completely doing is exactly what they're fighting against.
Be what you want, but don't lie to yourself. Know what is logical, know what doesn't make sense, or what doesn't fit the criteria of what you're trying to be and use that to figure out who you really are, because I have a feeling a lot of people don't. Maybe that's just me, I've never felt any feelings of wanting to be out of the "norm" in gender, so I wouldn't know, this is all coming from that point of view so please excuse me if my opinions are "wrong" to some. They're just opinions.
And that's all I have to say about it. I know I rambled on, and my opinions aren't even that well organized but I hope something can be fished out of it.
EDIT-Sorry for my mess of a post, I don't even know if my thoughts came onto words there. It's a headache of a topic and it's really hard to talk about sometimes.