I have looked for every possible option man. B1/B2 is seems to be the only things that I can help with.

But someone advise me to make a letter, explaining my working status but States department has not mentioned a single thing about such paper.

In case of student, I think college invitation would worked. But I am unaware how things would work in other cases. Wether a Nepali people can come to US just for sake of visiting without any convocation.

I am really in shitty situation right now man please don't laugh at me.