@fred703,I am on a diet too right now!! I usually very active and did lots of sports but for the past few months i was recovering from a small accident of a broken toe that hindered me not able to do the sport i wanted to do.
Hence, my weight climbed same as you from 76 kg :))...Now that I am healed, I slowly go back to do some sports i started with yoga, jump rope, and strength training..
and for the diet i am doing intermittent fasting, every day I consume only 1700 kcal and at different eating windows from 14:00-20:00..the rest of time I fast and only drink water and sleep:)
the benefit of it is i can eat whatever i want as long as i am in my calorie intake
you can try it if you like..here is a link about IF