I feel like you are describing exactly me! And I’m regularly not sure if I’m really asexual. But it’s not about wether you fit a narrow description, or if you can relate to every ace meme - asexuality is a spectrum, and as long as you feel you’re on it, I’d call you asexual.
I think you should ask yourself if you even wanted to “fix” it if you could. Do you feel you’re missing out on something? If not, I wouldn’t care if I was born with it or not. It’s the way you are, and just because it’s not the norm, it doesn’t need fixing.