It is common that when you build a user form, it tends to auto-fill particularly when a user has signed up or logged in on a browser before and saved the password in the browser.
Common approach is to set autocomplete="off"
but this doesn't work in modern browsers anymore
for all input field; instead, in password input field that is with type="password"
inside form
tag,
set autocomplete="new-password"
and that will work.