What are the best acne treatments for under $20 that i can get at a grocery stor!

I am a 16 year old boy and have had minor to moderate acne for the last two years. Recently my acne has been getting worse and i dont have much money to spend on acne treatments. I shower twice a day and use non-acne facewash during these showers. I wash my sheets and pillow cases once a week. Im a sophmore in highschool, so I have a pretty decent stress level. I dont have the option to buy acne products online or off of tv comercials because my dad is unemployed so i am on a strict budget and he doesnt like useing a credit card, I also dont realy have the option to go to the doctor because of this. Im tierd of looking dirty and oily and in desperately in need of clearer skin. I dont mind dry skin or irritation just as long as it will get rid of my acne. ive got prety much all form of acne (zits, blackheads, white heads, blemishs, marks from acne, you name it). Please help me if you can.