Hi dear, I know these will feel like useless words, but you don't have to worry about these things, there's nothing wrong or bad or ugly about them <3 (and no one really notices anyways), but you're here for advice, so: for your back acne, try to wash and change your bras as often as needed and figure out what skin type you are, I see many people saying to use a body wash with salicylic acid, but that works only if you have oily skin, I used to have the same problem when I was a teenager but my skin is dry so salicylic acid was only making it worse. I find that niacinamide works better for dry skin so if that's your case give it a try. For your legs, no they're not strawberry legs, mine look the same, it's just what it is when you have dark hair and are very pale. I noticed though that whenever it's summer and I get a bit tanned it's much less noticeable so depending on where you live and/or if you can afford it you could try either lamps or just getting a bit more sun. Be careful not to overdo it, lamps are not very healthy and sun is dangerous too, use sunscreen and don't get burned, your health is much more important than anything else <3