Visitor Visa - B2

Hi Everyone,

I Traveled to UAE, Dubai 2 times.

One my first visit to Dubai i spent 2 months there, and on my second visit to Dubai i spent 3 months there, because my younger brother is working there from past 3 years.

i also visited Thailand 2 times as a tourist.

and once visited Malaysia and once visited Singapore as a tourist.

I applied for Turkey VISA but they refused to give me visa, and never told me any reason.

and April 2017 , i applied for Brazil Visa , but they also refused to give me visa,

now i am planning to apply for USA visit Visa.

I am married person and i have one baby boy, he is only 3 years old,

i am thinking to apply alone for USA tourist visa.

my wife and my son will stay in Pakistan , and my all family. what is your opinion about my case ?

i need suggestions , how much chances i have to get USA tourist visa.

thanks in Advance.