I'm a 18 years old male, am strugglin from severe acne from last 2 years, consulted derma. No use, what to do?

Another consult. From the sound of things, you're probably a candidate for isotretinoin. You're also 18 now and can decide on your own. Dermatologists may be reluctant to write for this strong stuff for a kid whose parents might get upset over the brutal side effects. However, it's your call now. You'll need systemic medication in any case and a good relationship with a physician. Best wishes.