If I have stayed in the United States illegally, can I continue to get a visa? Ask for advice!

Yes, because: the United States and some countries enjoy information, so they can't apply for visas from these countries and can't get through.

Now is the internet age. It is ok to legally stay abroad through formal channels, but illegal residence is not desirable.

And you don't have to think about an American visa, and you can't pass it.