Acne under the chin? Demodex mite?

I have overall skin trouble on my face, and for about two years, I've had something really bad under my chin. I don't know if it's a hormonal issue or folliculitis.ㅠ

Even when I go to obstetrics and gynecology, they say it doesn't seem to be due to hormones, and the dermatologist says it's folliculitis, but the medication for folliculitis doesn't seem to work well, so I'm not sure if that's the caseㅠ What should I do!!