Healthy lifestyle and good skincare can't cure acne. They only don't make it worse or at most improve a little.
Throughout years of suffering acne( since puberty until now 25 years old), I have learned that medication is the most effective way to control acne.
People with acne have sebaceous overactivity and skin hyperkeratination, most probably due to genetic factor or hormonal imbalance. Most acne ceases on it's own when a certain age is hit, usually at 18-20, except for adult acne. Medication will tacke one or both of the root problems above.
So I will advise if you are suffering from acne go to a good dermatologist, instead of spending a lot in trying different skincare products or facial treatments.
Be careful with isoretinoids though. It should only be perscribed to severe acne. It comes with many side effects, depression is one of the worst, and pregnancy is strictly prohibited during and at least six months after the course. Have your liver and lipid levels checked during the course. I have seen quite some doctors prescribe it without educating the patients properly, even to the extend saying that it's an antibiotic. That's quite unethical from my pov.
Always read the leaflet coming with the medication you are given.