Your not eating correctly, if you've been hanging around this forum you'll have noticed a lot of people saying about BMR (your daily calorific needs), and also then mentioning the phrase 'cutting' which means you need to create a deficit in your diet. Post your stats i.e. height, weight, age. Also, for a typical day, post what you eat.
Your cardio is ok, HIIT will probably be the way forward for you as well as some proper resistance training.