Forced bachelor

Dear Dr.

I'm 36 years old now and had three months of short marriage life about 9 years ago. Since then I have been living alone. To be direct, surviving on masterbation (masturbation) and have not had sex for these many years. I am now considering again to get into a family life and would like to get married. My question is, will my sex life be alright after such a long gap?
I noticed several times that I have no hard erection but can get little soft one very often enough to masterbate. For about three months now I have stopped masterbating (masturbating) only to get it little better and hard. My another problem is my penis gets too flaccid soon after the ejaculation. Is it because of swollen dorsal vein or any other problem? I believe I have no impotence problem as I get erection. Kindly advise.