Maybe it's just me, but I think I would try to get rid of the dark black marks first. The first picture looks like it may be primer for most of the dark marks, and if so, I would concentrate on the other non primer marks. The second picture looks like the dark marks came from whatever made those gouges in the paint.
I would try paint thinner first for non primer areas, then wet sand any high spots especially in the second picture to make the scratches level and then apply touch up paint in several layers making sure each layer was fully dry before adding the next layer and building it up. Once the level of touch up paint filled in for the most part what you think is acceptable, wet sand, then polish.
It seems like a lot of paint would be needed in the second picture so if it were me, I would try to fill in the gaps with body filler or glazing putty. I wouldn't hesitate to try, but that's me. Others would just get it repaired and painted. It really depends on what you can live with and your budget.
If the damage was the result of the car being lowered to the ground, I would reassess if that kind of drop in height is worth the damage done in the long run. Just my humble opinion.