I know acne sucks but you're only 13 and believe me this is completely normal for girls your age. Everyone goes through an acne phase at one point with all the hormonal changes. I didn't try to treat my acne until I reached the 18-19 mark. Please be patient and let your skin run it's natural course. As you know Accutane is a pretty hardcore drug so it's really not worth it right now.

Have you tried cutting out dairy from your diet (milk, yogurt, ice cream, foods with cheese, etc)? It has helped a LOT of people clear their skin

I'm not a big dairy fan to begin with and I do try to avoid it as much as I can. I keep trying to tell myself that it's normal to have acne but I look at the rest of my friends and they don't have it. But thank you for the advice!!!

If nothing else is helping and the acne is being a big downer, then I'd try accutane. (I wish I took accutane while I was in high school, tbh, that was an awful time and I became depressed because of acne.) But I'd recommend trying changing diets/lifestyle first. In the end, it's your decision.  Good luck!