The form of the Second Conditional is:
We use Second Conditional:
if we talk about impossible situations in the present:
If you went to bed earlier you would not feel tired (you always go to bed late and so you always feel tired).
If I had more time, I would not eat fast food.
if we talk about imagined, unlikely or impossible events in the future:
If I had three children, I would play with them all the time.
If I won a lot of money, I would buy a new car.