① Yes, I believe wishes can come true because we believe that Allah listens to our duas. When we pray and also work hard, Allah can make our wishes come true.
② My wish would be that Allah guides me to the right path and gives me success in this life and the hereafter.
③ Yes, sometimes. For example, when a person makes dua for something and soon after gets a good chance or help, it can feel like a sign from Allah.