Past month , I increased my protein intake to 165 grams (I weigh 81 kgs , Male) ,I workout with weights and cardio at the end , and abs every alternate day , but today when I had my body measurements , there was no significant change , and whatever changes occured were negative.Although I am able to lift heavier than what I could one month back. What went wrong?
The most important factor for most people trying to lose (or gain) weight is total calorie intake.
The ratio of protein to carbs and fats has some effect, but it's less than total calories.
In short: eating 165 grams of protein daily is fine. If that's part of a 4000-calorie diet, you're probably going to gain weight. If it's part of a 1200-calorie diet, you're probably going to lose weight.
If you've taken your regular diet and added in 165 calories of protein on top of it, you're almost certainly going to gain weight.
Feel free to describe your overall diet in more detail if you like.