No Erection Absolutaly No Libido. Mine.

Hello doctor, i am extremely nevrous about my sexual life i am 28, male, vergin, unmarried, non-alcholoholic, athletic person, slow day by day I seen myself loosed erection from past 4 years now at the moment no attraction left, can't even masturbate, it doesn't respond well also there is no feeling to masturbate or to have sex or to have a girl friend now I feel completely exhausted due to lack of most most enjoyable part of my life. I begged literally several doctors to make me out of it also I am very concerned about medication that would cause big side effects on life so I wanna solve this issues from roots. Please i advice you to help me. I begged for my life either there will be no choice for me to quit mine.