less weight and lots of reps will only get you lactic acid intolerance and give you no results on weight loss. if you google pictures of female Olympic power lifters who does the 5x5 workout, you'd be surprised how in good shape they are while maintaining a feminine shape. the OP wanted results about losing weight, and therefore means heavy weights+HIIT.
and btw, body builders are wasting their time since what they usually do is 8, 10, 12 reps for 3 sets and a lot of volume. thats why they get huge muscles without any functionality



