American skilled immigrant EB-3 or work visa H 1B, which is more suitable for my situation?

First, both of these visas require employers to apply to the US Immigration Service, which is not something that an intermediary can do.

Second, the current conditions do not meet the basic requirements of H 1B-bachelor degree or above recognized by the United States.

Third, EB-3 is scheduled. The current timetable is 10 year.

Fourth, there is no shortage of professionals in the United States, and it is difficult to find employers.