How do I get rid of acne?

Whenever I go to school, everyone has shining, bright, clean faces. But my skin is covered in acne, and that makes me stressed out. I have tried products, but they never seem to work and I cannot apply them on a regular basis due to my busy schedule. Some of the products made my skin even worse, so I am not a big fan of “getting rid of acne” products. I always feel like I am an outsider due to my skin—I’ve never been comfortable with myself. My skin makes me feel insecure and self conscious all the time. I am a healthy eater and exercise often, but I do not understand why my face is covered with acne. I don’t touch my face often or wash it too often, either. Are there any tips, foods, advice, that could help me get rid of my acne?