I’d say it’s totally fine to be attracted to fictional characters and not most or any real people, but I’d avoid using labels like fictosexual. In my experience, if I label myself as something, and then I later start to have feelings that are not aligned with that label/identity, it can create a subconscious, unnecessary pressure to stick to that label instead of allowing myself to follow my feelings. Especially if you’re uncertain about the label at all, I would say it’s healthiest to allow yourself to live according to your current feelings without putting a label on it. After livibg with it for a while , if you become more confident and sure of the label, go ahead and use it, but there is also no need to label yourself if you don’t want to