Can someone (anyone, everyone!!) give me advice on how to clear up a sudden skin problem, please?

My skin was never flawless but it was always pretty close. Now that I'm 20, it's horrendous! I might even get scars. It's mostly along my jawline. Someone please advise me. I need to get rid of it! Thank you !
Can someone (anyone, everyone!!) give me advice on how to clear up a sudden skin problem, please?
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