1) If I could know my future, I would make fewer mistakes.
2) If I were you, I wouldn't eat so much fastfood.
3) If I went to study in England, I would speak English very well.
4) If I met a celebrity, I would ask this person for a selfie.
5) If I lived by the sea, I would go to the beach every day.
6) If I saw a UFO (=НЛО), I would take a photo of it.
7) If I had more free time, I would watch all the Marvel films.
8) If I could travel in time, I would go to the future.