Lactose free is not the same as “dairy “ or milk
All labels in the US have to have the words for the top eight allergens somewhere on it in plain English
This means the word -MILK
my oldest nine ibd kiddo is severely lactose intolerant
So anything with milk on the label is easy to avoid lactose
Hidden sources of lactose would be things like salt /vinegar chips
Some lunch meats or pepperoni
Creamed soups
Most Sweet baked goods have milk
Oreos are free of milk
Some spaghetti sauce if it has cheese
some cheeses are naturally lactose free (think hard cheeses-soft cheese tends to have lactose still )