Figuring out their sexual identity takes a bit of work for some people. It might take years of experimentation, meeting new people & introspection to "discover"/performatively invent an identity you're comfortable with. You might be an asexual, demisexual... or even a homosexual. People don't get that sexual identity is a powerful aspect of yourself that compels you to behave in a certain way. It's not something that can be fixed (see the failure rates of conversion camps). But it might not be a matter of sexual identity. Maybe you haven't met the right person yet. That you don't feel sexual attraction to people with whom you have an emotional connection does not mean you're asexual. If you don't have sexual feelings at all + your mind and body are healthy (some disease states cause low libido), then you're asexual.