i dont think i have a special interest.

Im(20enby) officially diagnosed, and at my assessment last year the person doing the test(idk what theyre called in english) seemed to think art was my special interest. I dont think it is. From how i hear people talk about special interests it doesnt seem i have one. I love making art, but i hate art theory, art history and anything about art where im not making it. And ive also only done it for about 4 years. I also like reading, but i only read a book a week and i dont have any particular knowledge about books in general. I like different shows, movies and musicians, but i dont have extensive knowledge about them. I feel like an imposter because special interests are supposed to be such a core element of autism. I dont doubt im autistic, i just feel dumb for not being really good at something. When i was younger i think math was my special interest. I loved it and was always a year ahead of the others because i would do it so much in my free time. But now i feel like ive masked my whole personality for so long that i cant even form a proper special interest. Every time i get a new fixation i become immediately overwhelmed with the amount of knowledge that exists about it and i just stop interacting with it. I feel so stupid because i cant retain any information