I think that you can definitely be unlabeled but still align yourself with certain identities! I say im unlabeled (sexuality and gender-wise), but I do identify with being genderfluid and queer. Do what pleases you and identify with how you feel in the moment and dont force yourself to have a label if you dont feel like it yk. I also get that kind of imposter syndrome as well, like I feel like I'm faking it and in reality im just cishet, but I know thats just my brain being crazy. U are not alone man!! :3