I had worse acne than you at 18
I suggest 2 things. One. Drink more water. 2. If you can look into it and get it. Get retin-a or an over the counter version is this.
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Likely this is hormonal acne. This will get better as you approach your 20s. However if you still have issues. Considering altering your diet. Avoid processed garbage as much as possible. Hormonal disruption is common with acne of this type. Just a fair warning. Your acne will likely get worse before it gets better. This is just how it works sometimes. But if you get a topical like what I said. Keep using a none irrating sunscreen. ( a life hack is order a Japanese branded sunscreen on Amazon it's got way better ingredients than most of the in store alternatives and blocks the sun much better and is better for you)
Do not pop your pimps or pick them unless they are about to bust and if yoh do pick them. Use a paper towel and use some alcohol on it so it will dry the acne out and kill the bacteria that is in the puss.
Always keep moisturizing and I suggest this as a general moisturizer
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If your acne progresses into this as mine almost did. You gonna have to get legit retin a or get a prescription for a oral called Accutane
It's strong and will nuke the acne but only use this as a last resort
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