Customising the comment_form() output

I know I can use the fields object in $args in comment_form( $args ) to change the output of fields in comment form but I want to do something slightly different. First I want to come up with a form like this one.

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I have managed to build it up to here.
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Now I want to work on the layout and remove the cookie consent form. I want to just keep the email without asking the user.