Does mango have some amount of unhealthy sugar?

I don't think sugar in itself is unhealthy. Just the way we eat. I am type 1 diabetic. I often have hypos. My blood glucose goes too low. And I need fast carbs. That means lucozade. Very unhealthy as a habit, but needed at the time.
In my country we can't buy mango but it's in orange and mango squash which I love.
In short, the important thing is to have a balanced diet. If we avoided everything they tell us is unhealthy, we wouldn't have anything left to eat!