Will a Facelift Tighten Pores?

A facelift will improve some of the "sagging" you describe, but pore size and acne scarring will generally not be substantially improved.

This has been a vexing problem for facial plastic surgeons, often addressed with fairly aggressive procedures like full face dermabrasion or those that don't seem to work at all light superficial laser resurfacing.

The best results with the least amount of down time and expense appear to be with deep fractionated laser treatments combined with selective excision or elevation of deeply pitted scars.  Depending on your individual skin type and other related health concerns, this approach can be tailored specifically to you.

No, a facelift will not help tighten pores.
Facelifts do not address textural issues on the surface of the skin; rather,
they help to tighten lax, sagging skin and create a better neck and jaw
contour. If you are concerned about surface issues such as pores or acne scars,
laser rejuvenation, chemical peels, or microneedling may be better for you. I
suggest visiting a board-certified facial plastic surgeon or dermatologist who
can assess your skin during an in-person consultation and come up with a custom
treatment plan to address your concerns.

Unfortunately, pore size won't be greatly improved with a facelift. It may reduce their appearance a bit, but probably not to the extend you'd like.