I‘m also in the US. You can buy food without crap in it. I read labels and avoid many things.
Processed food has stuff in it designed to repress your body signals telling you you ate enough, so you eat more.
There is more sugar in things, that‘s true.
Sweeteners aren‘t the answer either. They are toxic and mess up your metabolism.
It‘s best to skip sugar, substitute it with things like honey or maple syrup, or use very moderate amounts.
Lifestyle for me here is different than in Europe, with more driving and less opportunity for exercise.