Which procedure should I get?

Skin concerns of a new mom in her 30s… Elasticity is really important ㅠ
Now that I'm in my 30s and have given birth, I can really feel the difference in my skin's elasticity compared to before. Back then, I could stay up all night and be fine, but now it shows on my face immediately. I'm particularly worried about melasma and dullness, so lately I've been focusing on brightening and soothing care. I'm so tired after putting the baby to sleep that I don't feel like doing anything, but if I at least do a quick skincare routine before bed, my skin feels a bit different the next day. I'm also interested in dermatological procedures, but I'm still debating which ones to get, so I'm diligently searching for reviews!