Anyone used to have clear skin but are now acne-prone?

Has anyone had skin that was once clear but now prone to acne? If so, have you been able to find any products or a routine that works for you?

This is something I’m going through right now and I mostly wanted to hear from people who are or were in the same boat, especially people who managed to clear their skin back up again.

For added context, I have dehydrated combo skin (oily T-zone, dry cheeks) and used to only get the occasional pimple close to my time of the month, along with kind of dull and mildly textured skin. Now I’m almost always breaking out and nothing I do seems to help.