24F here confused about whether I'm actually also attracted to men. any insight/advice welcome.. please.

I tried posting this in r/ latebloomerlesbians but it got removed so I'm reposting here. I've identified as bi since I was a teen. I've only ever had one "crush" on a guy but I don't think it was an actual crush. I got excited about spending time with him and really liked hugging him. but I never thought about kissing him/wanted to or had any sexual thoughts about him. so I think maybe I was just starved for any kind of platonic affection idk. but i've had multiple crushes on girls starting when I was very young and I did things like making my Barbie dolls scissor and my female Sims "Woohoo" together lol. I also was obsessed with Skyrim as a kid and I always married a female NPC, had a female companion and put her in skimpy clothes because I wanted to see her body 🫣 I would get angry when a fictional female character I liked ended up with a man. like in Treasure Planet when the captain Amelia ended up with that ugly dog guy 😭 or when I watched an anime where the protagonist had a beautiful and kind girlfriend who he ignored, I thought "I would never treat her that way if I was dating her. I would cherish her". when I was a kid, One Direction was insanely popular, but I thought the boys were all bleh and had zero interest in them. same with other male celebrities that were popular (Chris Hemsworth, Henry Cavill, etc. they were all boring or even gross to me when thought of in a sexual or romantic context). and the idea of marrying a man didn't appeal to me.

my last crush on a girl irl was when I was in highschool. I thought she was absolutely beautiful.. her skin looked soft, her hair was glossy, full lips, and she had these beauty marks all over her face that were sooo gorgeous. i really wanted to kiss her. I've been socially isolated since age 17 (lost my friends after a mental health crisis. then decided to finish HS online, so I didn't have a social circle at all) so I haven't been around really anyone to experience more crushes or attraction. so I'll describe attraction I've felt about towards fictional characters and in porn. I've been infatuated with one or two male fictional characters (live action) and thought I was attracted to them. but my like of them eventually went away along with any attraction. I've had attraction towards female celebrities before and the attraction to the women never faded or went away like it did with the handful of men.

the thing I'm most confused about is my sexual fantasies and porn I watch. I sometimes fantasize about sex with a man, but only in a very specific situation: penetrative sex in missionary position. the part I find hot about it is my body being used for someone else's pleasure. it makes me feel feminine and I like being wanted. but when I fantasize about women, I can still get off thinking about her only making me feel good. I also never think about other positions / sexual acts with a man. and seeing men give cunnilingus in porn or the thought of a man doing it to me genuinely disgusts me (sorry). but if it's a woman giving another woman oral I find it super hot and appealing, in porn and in my personal fantasy, both receiving and giving. same with anal, I find it unappealing with men but hot with women. and I don't have any interest in giving a man oral and I've never wanted to kiss a man. I also usually get the ick when seeing a man in his underwear or naked. when I watch porn it's usually lesbian. looking at naked women turns me on and I always feel the desire to give a woman oral when seeing her body. if I watch straight porn it's videos like my previously described fantasy with men: with the man getting off from being inside the woman.

I have also doubted my attraction to women and felt like a fake bisexual for some reason, despite the examples of sapphic attraction I mentioned above. is it possible I'm straight?

TLDR: I've only thought about men sexually in one specific fantasy, no other situation. does that make me bisexual? this is the part I'm confused about. any thoughts or advice from women who have been in a similar situation would help. thank you 🙏🏽