No, nothing will be changed and you're still now living in a banana republic.
Any Democrat will be fine. None of them are obvious criminals. Since he took office Trump is now up to $27 million in settlement payments to avoid various fraud indictments. His only concrete legislative achievement has been to rig the economy even further in the direction of the wealthy. Everything else is a total shitshow. Another four years and he'll get control of the Fed and then you're fully bananad. It's in everybodys' interests for a non criminal to win in 2020.