My face suddenly looks sagging… Why is that?

My face looks saggy these days. Is this simply due to aging? I thought I was getting enough sleep and taking good care of myself, but in photos, my jawline looks blurry and I look very tired overall. Could it be due to my lifestyle or poor posture? I'm wondering if there are any home remedies I can try. I'm also wondering if I should see a dermatologist or undergo a facelift. I'd love to hear some advice on how others manage their condition.