you dont have nasofobial folds, nasofobial folds look like this, if you compare it to yours you can see you definitely dont have nasofobial folds
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your probably mistaking the almost curve caused by your mouth projection for nasofobial folds, the reason it looks more prominent in the second picture is again lighting and the camera is closer to your face so there is more detail, your face is almost shiny or sweaty in the second pic which is causing light to reflect off of your face making the curve more prominent, whereas in the first pic your face looks much less shiny and the lighting is different which makes the curve caused by your mouth projection way less prominent, almost invisible.
nasofobial folds are usually caused by damaged skin mostly caused by uv damage ( that also why you should always where sun cream or a moisturiser with suncream as even if its not a sunny day you can still get uv damage over a long period of time) and lack of collagen, stress and diet wont directly affect your nasofobial folds, but being stressed all of the time does produce more cortisol which in turn down regulates the synthesis of collagen which will lead to you having bad skin and nasofobial folds earlier, so yes stress does play a part in causing nasofobial folds.
you dont need surgery to return to get to the level you were before, at worst its just a bit of bloat (leaning out would fix this) but most likely its just a difference in lighting, if your worried start taking care of your skin, use a cleanser, a hyaluronic serum, a niacinamide serum and a moisturiser in the morning and use a retinol serum and a moisturiser at night.
this routine will not only improve you skin in terms of acne and any blemishes you have but it will also help boost your collagen production
i would recommend buying any serums and skincare products from the ordinary skincare or revolution skincare,