Do you often cook with ingredients like canned beans or canned diced tomatoes or premade stock? Do you buy any kind of grocery store bread, including the "fresh" stuff from the bakery section? All of these things usually contain added sugar in the US, sometimes in shockingly huge amounts. I think people from other countries don't know to look out for sugar in these kinds of processed but not ultra-processed food items because such things don't usually contain sugar (because it's totally unnecessary). So even if you're mostly cooking with raw ingredients you could be getting way more sugar in your diet than you did wherever you lived before.