Clear case iphone 16 pro max

I bought the iPhone 16 Pro Max Black Titanium on February 6, and on February 7 I applied a screen protector and put it in an original Apple clear case. Today, March 27, I noticed white spots on the body that look like scuff marks, although I’m not sure. What can I do in this situation? As far as I know, the iPhone 16 Pro Max shouldn’t scratch this easily, especially considering I haven’t dropped it, it hasn’t been exposed to moisture, and I regularly clean it from dust under the case.