Subcision is best done for circular deep scars (rolling scars).
Unfortunately due to your skin type and scars - I don't personally think subcision would help too much as your cheek scars have jagged edges (could be worth a try though). An aggressive co2 laser might be too rough on your skin type but could help.
I would try to find a doctor who can do subcision, excision, laser and tca cross all in one session depending on the specific scar. No idea how good he is but Dr Philip Young does something along those lines -
"Combining these Acne Scar Treatments is another way of optimizing results. We have found the best approach is through stages where 1.) fat grafting is the first thing started 2. then subcisions, excisions, deep chemical ice pick peeling 3. the last stage is carrying out the co2 laser resurfacing with dermabrasion for the deeper scarred areas. We combine dermabrasion to bring the resurfacing to a deeper layer in a more controlled fashion."