Can Chilean immigrants handle it by themselves in 2022?

You can't. Must be handled by immigration staff. At present, there are many ways to apply for Chilean immigration, among which the temporary visa program for retired or economically independent individuals is favored by foreigners because of its convenience and quickness. If you intend to immigrate through it, you need to prepare information forms and application forms, passport scanning-drawing pages and personal color photos on a white background, and then go to Chile for formalities.