Health and unhealthy food

When i be in my country i often eat healthy food. I often eat in my home,but sometimes when i go out with my friends i eat junk food.I knew junk food is unhealthy food, but i usaully eat fast food or junk food here in canada because i don't knew to cook healthy food.When i was hungry and in hurry i eat fat food or junk food like pizza, any sandwich with french frise and pasta,but rearly i eat humburger.When i go to my country i go to diet, but here in cananda i can't because i tried and couldn't because cananda is cold and in the cold i often hungry and i eat junk food lik chips or cookies.I wanna lose weight in my country not here because i wanna get in shape.