If you have Android, you should check out Shelter or Island (Shelter is open source, but Island is in the play store). It’s not what you’re describing, but it accomplishes something similar. It essentially leverages Androids ability to create a work profile to create another isolated profile on your phone. That profile can have spoofed, useless data fed to it or even just be disabled when you’re not using it.
I’m not so sure. Are these polls taking into account that abortion is on the ballot in a lot of states? If the question is Trump v Harris i believe these polls, but every time abortion has been on a ballot it drives democrats out to the polls and their candidates win with larger margins than expected.