Hello, I Am A 19 Year Old Male Of A

Hello, I am a 19 year old male of a healthy weight and I exercise regularly. I have no issues with cholesterol, fat in general, or anything of the sort. How should I go about fat macros? For example, should I replace whole milk with 2% milk? I hear that eating fat macros is normal and healthy as long as you don't eat excessive amounts of saturated fat. Thank you for your time.