Como disability via Javascript que os cookies carregauem dados em apenas uma página especificas

Question

I have a registration page that has email and password, when the user clicks to save email and password in the login, the auto fill of the coockies already fill the registration data. I can’t clean the coockie and they have to work normally on the other pages. (I’ve tried to use autocomplete="off" in html but it didn’t work, and I can’t null the email and password either because when the browser searches the coockies triggers a validation).