One of my personal favorites: https://en.m.wikipedia.org/wiki/Boundary_Waters
If you portage in far enough, you can be the only person/people on a lake, with no cell phone service. On the other side of the Canadian border is Quetico Provincial Park, which is a Canadian canoeing wilderness. The million acres of BWCA and 1.2 million acres of Quetico join to form a massive wilderness full of lakes and wildlife. Native Americans left pictographs which are still visible, and French Voyageurs used this area extensively to travel from Canada to Lake Superior. I highly recommend a trip if you ever get the opportunity.
https://en.m.wikipedia.org/wiki/Public_land#/media/File%3AUS...
And yeah, those areas are really full of idiot tourists walking around everywhere.
What I think a lot of people don't understand is that is 0.00001% of all the beauty that BLM/NF lands in the US offer. I have my own favorite trails in Oregon, Arizona, Utah (that I won't share anywhere) but some of them see 1 person per day. I'm sure there are some folks that know about trails visited once a year. It's those areas that are definitely NOT Disney. (Especially on June 21 when you'll have thousands of naked people hiking everywhere)