Asexuality is about not experiencing sexual attraction, not about being interested in sex or not.
Some asexuals are also not interested in sex: Sex Repulsed
Some don’t care: Sex indifferent
Some want it: Sex favourable
Of course, then there is the spectrum including Grey Aces: Sometimes feel sexual attraction under certain circumstances, and Demisexuals who are only sexually attracted when they have a strong emotional connection to someone.
There are other labels under the asexual-spectrum but those are the most well known.