I'm worried about fine lines and loss of elasticity. Should I start taking care of them now?

I'm posting this because I've been worried lately that my skin isn't as elastic as it used to be.

I don't have really severe wrinkles yet, but when I smile, I'm more self-conscious about the areas around my eyes and nasolabial folds than before, and I feel like my skin is sagging overall.

My skin used to be fine no matter what I applied, but these days, if I don't take care of it, it shows immediately. People around me say it's better to start taking care of it in advance, but I'm not sure which method is right.

I'm looking into home care products as well, but firming products are quite expensive, and I'm curious if they actually work.

Is there anyone here who started skin firming care in their late 20s or early 30s? If you have received dermatological treatments, I am also curious about the criteria you used to choose them.

I prefer a natural approach to care rather than excessive procedures, and I would like a method that I can receive treatments consistently.

I would be really grateful if anyone who has had similar concerns could share their experiences!