Can I travel with a group by myself in America?

There is no such thing. If I could travel freely like this, I would have been there many times. I must join the group. America is afraid that if you travel to America, you will never come back. If this really happens, the travel agency will have to bear a great responsibility (in fact, you can travel only because the tour group guarantees you, so you can go out ~ ~). So unless you visit relatives. Visiting relatives can be free. Three to six months is ok (but most of them have not been approved).

Unless you are from Hong Kong, Hong Kong people are free to go to the United States. As long as you have a SAR passport. It's also visa-free ~ ~ ~