hey guys, im a 79kg guy. i want to lose weight. 18 years old anyway.

here's my current diet

breakfast at 7am : 3 pieces of bread
lunch at 1pm : vegetables(sayur kangkung)+fried fish or sometime meat
dinner at 8pm : vegetables (sayur kangkung) + fried fish.
sometime i do eat something at 10am like kuih something like that.

i normally go to gym once in 2 days or jog once in 2 days, depends on my class timetable. please advice me how to lose weight. tq.