A session with a clay bar to remove bonded contaminants, followed by a machine polish, tpped off with a good quality wax or sealant of your choice will sort things. You can do the polishing by hand, but it's hard work, will take forever, and you'll have arms like Popeye at the end of it.
Filler waxes / polishes will mask the problem for a while, but the marks will soon return.
It's worth reading up about good wash technique as well, as most of these "swirls" are inflicted during washing/cleaning the car.
Cliff
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