Why am I always the girl friend, and never the girlfriend?

I am in my early 20's and at this point, literally every single girl I know has had some type of romantic or sexual experience by now. Meanwhile, I haven't even held hands with a guy. I also happen to have a lot of guy friends (due to my field), and if I am being completely honest, I wouldn't mind dating some of them. But I have come to realize that most (if not all) of them just see me as, "the chill girl who is basically a bro" rather than someone they'd like to get to know beyond that based on a few things: they go for other girls, they tell me about their hookups and Tinder dates, they offer to wingman for me, they point out some girl we know and say "I'd date her so hard", they call me "fam/bro/dude/man", etc.. I put on a smile and listen to them and offer advice if they ask for it, but it hurts deep down because you realize that they don't see you in the same way. Even at parties and clubs and whatnot, I noticed that I am never the girl that gets approached by people (which is kind of discouraging tbh, since it looks like even "beer goggles" don't work on me), and when I try to gauge initial interest via eye contact and smiling, the guys kind of just look away, or if I try starting any conversations, they don't really seem interested in continuing to talk (like the conversation just stays real shallow until one of us just walks away). I have also flat-out asked out a friend before, only to get turned down.
Logically I thought that either I am simply below average looks-wise or have a horrible personality, but it doesn't make sense to me either since according to the people I know, I am "cool" and "fun to talk to" and easily make friends (to account for personality). And as far as looks go, I am skinny, tall, wear my hair/makeup/outfits well, and have an "objectively" nice face (I lost count of the number of times random people or loosely acquainted people have told me I should model or that I am "one of the most gorgeous people they have ever seen", or that "there is no way I don't have a BF"; my facial features are feminine too). I am at the point where I really just want to find some companionship with someone that I have mutual attraction for and genuinely connect with. So, why can I not seem to generate any interest from guys? How can I change this, and not let it keep on impacting my confidence? It has gotten to the point where I kind of walk around assuming that no guy will ever like me, not when I am surrounded by a bunch of other amazing women.
I am also not a drinker or the type of girl that goes out to party every weekend, if that helps.
EDIT: I am also really feminine, if that matters; my interests outside of my work/studies are stereotypically feminine and I present myself in a feminine way too (long and thick hair, wear feminine outfits, soft makeup, etc.)


Source.