Sunlight really doesn’t help acne scarring. In fact, it worsens it and makes the scar appear darker. Being exposed to light is pretty inevitable, but that doesn’t mean you should just accept it as inevitable. Try to wear a hat outdoors and do what you can to avoid sunlight.
Sexuality, food intolerances, and SPF all exist on a spectrum. Bathing habits do not. In fact, it’s quite the opposite. How often you shower typically falls into one of two (extreme) camps: every day without fail or as little as possible (isn't that why wipes and dry shampoo were invented?).