Acne management: How on earth should I do it? 😢

Actually, I thought acne only appeared during school days…
Even after becoming an adult, it keeps happening to me, so it's really stressful.
Especially on days when I wear a mask or when I'm tired, I always get one or two on my chin and cheeks.

I've tried changing my face washing method, and since I've heard that I have oily skin that lacks moisture, I've been diligently applying moisturizing cream.
But I don't think it's really working yet, so I don't know what else to do ㅠㅠ

I want to manage it well so that I don't get any new acne or scars by managing it consistently!