acne scars

my skin has been like this for the past 2 years, i had really good skin when i was 15 and now im 17. ive tried everything and spent tons of money on different products but they wouldnt work on my face. im really trying to find a way to get rid of them and i dont know how. i really hope that you guys can help me out because ive never felt so insecure like this in my life and im just sick of it. Please share any tips that you think will work for me. THANKS !!!