pme & ed

Hello sir,

I am 27 years old married man from india. I masturbated from early age but at very start of masturbation, I finish too early. In that early age, I did masturbation 2 times a day. I used to move skin on my shaft back & forth to masturbate. I didn't rub penis head.
My erection is not as hard as it should be.
My penis get 70-80% length when it is erected and grith is short.
At very start of foreplay, precum comes out and if i continue foreplay for 5- 10 mins then i just about to ejaculate and if my wife touches my penis during foreplay i ejaculate and after this my penis would not erect for about half an hour
Precum comes out just thinking about sex.
I have now very week memory. i am also suffering from hair fall from head, eyebrows, chest and beard and grey hair problems, my body is also slim and weak.
My sex experience with my wife was also not too good. I ejaculate just by inserting it in vagina. Same is the situation if I masturbate it just ejaculates in less than 30 seconds. I am lacking the energy level like i have at age of 18.
I have very strong feeling that my penis tip and half of the shaft is too much sensitive and if this sensitivity is removed, I would be cured. I also observed this thing when I use condom. It reduces sensitivity of penis and I last longer in bed.
i also took ayurvedic treatment for it but my problem is as it is. An homoephomoeo doctor suggest me to take acidum nitricum 30, 2 drops thrice a day but is not working. kindly help me on this