First of all,for your case all you need is a scar serum since it will fade acne scars right after application.Plus,Vitamin E and Cocoa Butter also works best when it comes to acne scars.But still,if you would like to opt for homemade remedies you could try these 3 remedies if you want.Choose one that suits you(:

Baking Soda-Exfoliate your skin with baking soda. Often times, a version of baking soda is used in cosmetic microdermabrasion treatments. You can give yourself a mini microdermabrasion treatment by mixing one teaspoon of baking soda with the two teaspoons of filtered water.Then gently rub the mixture on your acne scar for sixty seconds then rinse it off.

Apple And Honey-Using a blender, make a mixture out of 1 peeled apple with 1 tablespoon of yogurt, half a cucumber and 1 tablespoon of honey. Apply on face, leave for 20 minutes and wash off with warm water.

Olive Oil-Massage a pea-sized amount of olive oil onto your face.Acne scaring can cause the skin to lose its elasticity and suppleness.The moisturizing nutrients in the olive oil will penetrate the skin to deeply moisturize the skin and soften the skin’s texture.

P/s:You could also try Mederma products if you want.It works for all kind of scars including acne scars.Try it and you'll see improvements.Hope I helped(:

Cucumber Rinse – you need 1 teaspoon cucumber juice and 2 teaspoons water. Combine ingredients and apply with cotton ball in the morning and evening