Seems to be you have tried few modalities of treatment for scar. Don’t forget to use a broadspectrum sunscreen along with all treatments. There are some other options such as lasers, tretinoin peel, Kojic acid based creams
Next Steps
Consult a dermatologist. They will examine your skin and will do what’s right for you
Health Tips
Use broadspectrum sunscreen as prescribed by your dermatologist