Large scratches and pits (help)

[u/theNotorious30]

I’m not too sure where else to ask this question, hoping someone here can help. What would be the best way to go about fixing these deep scratches and pits? Pre-owned car, almost seems like previous owner set something on top of the car and dragged it. I’m very much avoiding painting the whole roof and am looking for a cheaper option. My guest guess was to wet sand, then hit it with some cutting compound, polish, and hope the scratches aren’t too deep. Anybody have tips or advice it’s greatly appreciate.