Severe hair loss. Do help me with it.

Hello Doctor, I'experiencing severe hair loss for years,i had a very thick hair until i was 12 bt now i'm 20 and i dont have the one fourth of the hair.I have cosulted many doctors but nothing worked out for me.When i was 16 i suffered from alopecia,doctor pescribed me MAX10 oil and hair supplementary tablets even though my hair started regrowing on the location where i lost,my face even started covering with hair.thus unfortunately i had to stop using it.Then i went to ayurveda but it didn't work out for me.Currently I'm using dhathri hair oil.But my hairlines are getting bigger abd bigger.I'm really worried about this because if this condition continues ,i would go bald i fear.Doctor please do give me any advice or suggestions or somthing that i can do to grow my hair back.I dont even feel confident to go for any functions as my friends and relatives start asking about my hair loss.Doctor please do help me with it.