I have a question about the cause of the recent increase in freckles and blemishes.

Lately, every time I look in the mirror, I notice dark spots growing under my eyes and around my cheekbones, unlike before. This weighs heavily on my mind. My skin used to recover quickly even when I enjoyed outdoor activities, but now, once I've developed freckles, they just don't seem to go away. They've gotten worse since I've been golfing or hiking every weekend. I think it's time to figure out the exact cause of my freckles. I thought I was diligent about applying sunscreen, but I'm wondering if I'm doing it wrong or if I'm simply neglecting my skincare routine. I looked online and found that genetics can play a role, but since no one in my family has this type of skin, I'm at a loss as to how to even begin to understand the cause of freckles. Can I simply apply more sunscreen diligently to solve the problem? Or is there a specific cause of freckles that requires a more comprehensive review of my lifestyle? I'm really curious to know how others manage this pigmentation problem. Could you share some effective management methods or advice?