How to sincerely and nicely be assertive to hiring manager that you have no one in this world and have to escape family ?

Family problems are definitely not something you'd mention to a hiring manager. This person is there to find a competent employee for a particular job. They're not there to be your therapist. 

All your questions sound kind of the same.

Telling a hiring manager that you're nice and you'll be quiet and you need to escape your family, you have no one to rely on - that has nothing, and I do mean nothing, about being valuable to an employer. An employer isn't there to make you a member of his/her family. The company exists to make money. As an employee, **it's your job** to make the company profitable. It's not the employer's job to rescue you.

You don't need to beg, or grovel. What you need to do is find out specifically what skills a potential employer needs you to be good at.  

You don't say in any of the questions you've asked, what kind of job you're applying for. If you did, perhaps someone could offer you more specific advice.