fear

Fear of being a coward

Q: I am so ashamed of writing this question but I am posing it cause I really need help. Here is the story:

I always thought I am strong enough to fight back and can fight for my right. But recently a huge man trying to hit me and looking for a chance to beat me and I am short and skinny guy. whenever i see him my heart beat increases and I cant feel my legs. After this incident I started hating myself and I have lost my confidence, the guilt of being a coward is killing me. I cant see my face in the mirror because of shame. I always have the feeling that I am a coward and feeling so guilty that Allah (SWT) loves brave muslims and I am not brave. My question is will Allah(SWT) love and forgive a coward muslim and is there any cure for that. 

Is nikaah necessary for a person who does not fear committing sin?

Q: If a person fears that he will commit fornication if he does not get married, is it obligatory to get married? What if he once committed fornication but he necessarily does not fear it. It just happened once. Is marriage obligatory for him? What if he does not want to get married and if forced to marry he might not give his spouse her rights?

Fear of marriage due to being sexually weak

Q: Due to excessive masturbation since my childhood, i have become very weak sexually. Now my family wants me to get married. I also want to get married but I try to run from it because of my sexual weakness. I do not want to be embarassed in front of my wife. Please tell what should I do. Also, I also feel shy when I think of having sex with my wife. I try a lot to stop masturbation but I cannot.

Fear of marriage

Q: My question is that I lost my youth (jawani) and my parents are forcing me to marry, but I cant because of fear of ruining another persons life by marriage, so can I marry?