I recently had botox, liquid gold and lamprobe with her. I was nervous afterwards but she told me the results would be great and they are. Highly recommend her. I had never heard of lamprobe but it took away all the broken blood vessels on my cheeks. And my face is so smooth after the liquid gold stamping treatment. I am addicted.
Upneeq does not effect the lower lid area. If these are truely bags they are likely due to fat herniation and lower blepharoplasty is likely the ideal choice.
Whatever you did to remove this caused trauma to the skin resulting in post inflammatory hypopigmentation. Trauma to the skin, especially those with more pigmented skin types, can leave lighter or darker spots of discoloration. This generally fade and blend with time but may not fade completely. Unfortunately there is not much to do about this issue when it results in loss of pigment.
You have already gotten some good options but would also suggest the Zo skinhealth sunscreen + primer and the supergoop glow screen!
I would consider oral spironolactone, wenlevi or microtox treatments to help control oilyness. Then you could consider procedures to attempt to tighten in the skin such as microneeding and co2 laser, possibly more aggressive chemical peels.
I do not think these will go away with weight gain. I would consider an in person evaluation to see if you are a good candidate for something like botox depending on how these lines change with facial movement.