Breakouts/acne/purging

Around a month ago I decided to try glycolic acid from the ordinary on my face for my hyperpigmentation which resulted in purging. I’m 17 and I’ve never had acne (only a few pimples when I am stressed). My skin is sensitive and combo. I’m aware pouring last 4/6 weeks and it’s already been a month and a half and it’s getting worse not better. I broke out all over my face and decided to try some Korean skincare. Skin1004 centella ampoule cleanser, Purito oat moisturiser and skin1004 sunscreen (I think the moisturiser is making my skin tighter and dry but I’m not sure). I can’t use any actives because I react to everything and I feel like my skin keeps getting worse which I’m not used to at all. Please give me suggestions for improving my skin. I eat healthy, drink lots of water and change my pillows every week.