Judge microneedling by two things the sources name: collagen and skin texture. AAD speaks to the first, Cleveland Clinic to the second.
Collagen, according to AAD
AAD says of microneedling: "It works by stimulating your body to make collagen."
In plain words, the treatment is meant to get your body to produce collagen.
Appearance and texture, according to Cleveland Clinic
Cleveland Clinic says: "Microneedling can help improve the appearance and texture of your skin."
Read the verb with care. The source says "can help improve," and the subject is appearance and texture.
Related papers and articles on needling
Microneedling turns up in several research settings. Examples include this comparison of PRP with PRP microneedling in androgenetic alopecia and this study of radiofrequency microneedling with a 1927 nm thulium laser for photoaged skin.
For the wider family of treatments, the ASPS article on skin resurfacing techniques for facial rejuvenation is a useful next read.
Matching the treatment to the change you want
Write down the one change you want in your skin. Ask the provider whether microneedling is meant for that change.