skincare for acne and back acne

What kinds of product or brand that I should used for my acne and back acne? Can you guys recommend for me? Im always get disturb and feel so shy in front of all people arounds me. I want a good skin,flawless skin. Wish all my pray, hard working will be paid after this. Last but not least, Im not rich and wish all of you suggest a good brand and not too expensive. Thank you guys! Have a nice day!😊