4. YOU'RE DOING TOO MUCH CARDIO
If your goals are size and strength, cardio workouts should not dominate your program. HIIT workouts and easy cardio sessions can be slotted into your program, but your 1st priority is getting in the 3-4 weight training days. If you can recover well between workouts, feel free to add in a cardio session here or there, but not at the expense of your recovery.