I agree with turkle, in that your posts are laden with problems that seem to be related to social sensitivity issues. I am wondering if maybe you have some kind of never diagnosed syndrome, like Asperger's for example. (You can get an informal feel for that issue on Google, I'm sure.) Though I don't know if you suffer from that, I do know such people can be very inappropriate in their social interactions.
Someone needs to analyze what you are doing wrong and you need to get some kind of formal and/or informal coaching on what to do right. I have
had people be evasive to me in the past, here and there, if I brought up a subject they didn't like. I have even had them get mad at me - though that has been rare. No one has ever flat out told me - so far! - to leave them alone. In fact, most people enjoy being asked harmless questions about their lives. They like to talk about themselves! We all can be that way.
Therefore, if people are continually telling you "Leave me alone" then something is way off in how you are approaching them. As your posts say, you do not know what the problem is, therefore you do not seem to be empathizing with people and understanding the generally accepted norms for conversations with others. It might be your body language is also off putting. Do you get into others' space? Touch them when they don't want to be touched because you are not emotionally close to them? You might want to research that, too.
Why are you asking people those questions, btw?. Is it because you generally care about them and want to show interest, or could it be that you are just trying to make conversation for your own purposes? People can generally sense your
motives. I have had a couple of people ask me all the right open ended questions but somehow they seemed to be acting, and I do mean acting, off of a list they saw somewhere. That was a turn off.
I pray you will get insight on what is wrong and how to make it right. I hope you will pray to love others and want to bless them. Love is usually irresistible and will lead you in all the right ways.