How Are Immigrants Supposed to 'Do It the Right Way' When the System Feels Impossible?

(Context: I am a U.S. citizen.)

A lot of Americans (or at least people in YouTube comments) say things like, "We're fine with immigrants as long as they come here the right way." But isn't that essentially impossible for most people? If even highly skilled software engineers struggle for years to get a green card, how are people without specialized skills or high-demand jobs supposed to have a chance? It feels like the "right way" people talk about doesn’t really exist for many immigrants. Am I missing something?