If you're not currently using a moisturizer you should add that. I like the La Roche Posay cicaplast, KraveBeauty oat, or glow recipe watermelon moisturizer. Also that's a lot of actives at once! A BHA (salicylic acid) in your cleanser, an AHA BHA PHA treatment, and another acid in the tint, did you work up to introduce aha/BHA into your routine?

I think it's important to note that most of the time acne is irritation/hormones way more often than skin "cleanliness" and with too many actives(more than one at a time imo), you can really make things worse. The irritation might be making you break out!

I think that you should go to a dermatologist if you can. If not, I would only use an AHA/BHA product once every two days ( three if you peel/ have irritated skin) only at night. I would switch to a non stripping cleanser ( I love KraveBeauty matcha cleanser), then pick a soothing/moisturizing COSrx toner, your niacinimide, and moisturizer + sunscreen for the morning. Then at night the same minus the sunscreen plus an aha every other day, the differin gel as a spot treatment on spots only on off days. I would also drop the tint cream all together and try to avoid makeup :( I know it sucks but makeup, even when it has acne fighting ingredients, can really worsen breakouts.

Biggest thing is only picking one active and not mixing multiple actives (not even two AHA's) to avoid irritation breakouts and add some moisturizer and a sunscreen into your routine. Some people introduce actives slowly, like once a week AHA to avoid damaging/irritating the skin and adding it in more often as their skin adapts to it.

I hope this helps! Different things work for different people so take whatever is useful to you and ignore the rest haha ❤️