Dark colors are very High Maintence I hope your storing it in a garage.
This sounds like it may be your first dark car. It can take up to twice as much effort to keep it looking swirl free compared to a white car.
This is pure common sense & sounds obvious.
- Do not make any contact with the car surfaces unless washing or detailing.
- Do rub anything on it while the car appears to be clean.
- Do not use contaminated towels or rags. A rag the may appear to be clean can leave marks everywherre if it is containated with dirt or dust.
Good luck, I don't envy you.