if i want to move to america and have no family there what kind of job do i need to live there?

An advanced degree and work experience in one of the hard sciences, technology, engineering, or mathematics (STEM) is a great pathway to a work visa, worldwide, the United States included.

A STEM degree, years of STEM work experience and an empluer who wants to employ you who will sponsor your visa

regulations define a "specialty occupation" as requiring theoretical and practical application of a body of highly specialized knowledge in a field of human endeavor including but not limited to biotechnology, chemistry, architecture, engineering, mathematics, physical sciences, social sciences, medicine and health, education, law, accounting, business specialties, theology, and the arts, and requiring the attainment of a bachelor’s degree or its equivalent as a minimum