SightMD - Manhattan

I would consider instalift, as your skin/face is thin and filler might look lumpy. These threads last about 2 years!

I would certainly start with filler, more-so on the left side, as that line is deeper. Seeing a licensed injector is important in this case because you want to make sure the filler they pick does not make your cheek look "overfull" or bumpy.

I would start with filler first, to fill the upper lip. Though, filler does not always help fix a "disappearing smile", the filler can then be amplified by a "Botox Lip Flip".

I would absolutely recommend botox, we call this "baby botox", as you are injecting at a young age, you are preventing that wrinkle from ever actually forming!
As for under your eyes, you want to make sure you go to a surgeon, as filler under the eyes can be dangerous! If performed by a reputable provider, precise placement lowers your risk of any danger or migration of the filler.

No, you do not need to treat the glabellar area if it does not have the typical '11 lines' or is not bothersome to you; you can just treat the frontalis muscle of the forehead, making sure not to inject too closely above brow in order to avoid brow ptosis (drooping brows).