So just sexuality or kink things too (kink is not inherently sexual)?
Generally speaking though you're going to want to do reading up about things, watching videos (on youtube), listening to podcasts and really thinking about what it is you like, if possible without the gender binary and that whole performance etc.
Try to take yourself back to basics, what you fantasise about, how you like to be touched etc. Really explore ideas and concepts from the base of your psyche without lumping all the societal bullshit on top, if possible. It will take time and it'll probably be a struggle and take effort but it might improve things for you in general, whether or not you decide that you can only be a certain sexuality. I've found for me that exploring things through queer ungendered erotica with heavy emphasis on care, consent and communication can be useful but you did say no porn, so 🤷♀️.
Also, talk about things with each other without judgement, that'll help a lot.
Hope this helps!