First ones look like deep scratches, they can be rounded off by a machine polisher so they don't look obvious and visible.
Second one you will need to use touch up paint on as it's gone past the clear,top and primer coats.
Never used that black and decker model but the cheap (<$250) polishers are normally pretty average at removing much from modern paint, even soft subaru paint. Plus the 10" pad is way overkill! I would be using a 4-6" max It is was me





























