Which impacted your diet more Watching Carbs or Watching Proteins or Calories

Calories

Definitely calories. I am doing a dirty keto menu now in maintenance because I feel so much better restricting my carbs (20-30). I believe I might be allergic to gluten there is such a difference!
Also I realized that I have never really cared for potatoes, rice, pasta. I think they are pretty tasteless.

calories

Carbs. When I don't eat *carbs I lose weight. I have much more trouble staying under my calories when I eat those things.

*(by carbs I mean bread, potatos, rice - I still eat lower carb veggies and fruit)

Calories for me as well. My wife is vegan so we eat carbs alot, but mostly healthy higher fiber kind. We'll indulge in pasta probably once a week.

Calories first,but I also try to reach a protein and fiber target.

There's no way I could sustain giving up certain types of food just for the sake of weight loss, when I've been able to do successfully by eating all types of foods. However, if there were certain foods that were directly negatively affecting my health, then I might be able to avoid or limit those.

Calories. I did have a protein goal, and I think eating enough protein helped my diet be satiating for me, as well as a number of other things I did, but that wasn't really about counting or logging, but just food choice that I would have done without MFP. Calories were the thing that I found most helpful to track, by far.

I mean, any choice impacts my diet, do you mean which one impacts actual weight loss the most?

I follow low carb, but don't count carbs on a daily basis. I basically follow a Med Diet style of eating. This keeps me full and makes it more obvious when I am reaching for the foods which I tend to overindulge in (although I could totally overindulge in that whole grain loaf if I weren't saving it for French toast this weekend).

Calories are what count directly, for weight loss.

Macronutrients or even individual food choices can have an effect through energy level or appetite. Any way of eating that reduces energy level can make people move less in daily life, reduce exercise intensity, and therefore reduce calorie burn below baseline. Any way of eating that isn't satiating (or practical, or taste-satisfying) can limit practical ability to stick with a calorie goal. Those indirect mechanisms, IMO, is where dietary styles (keto, Med, IF, paleo, etc.) can indirectly affect weight loss.

Nutrition (macros and micros) directly affects health and well-being. I strive to get well-rounded nutrition because I'd prefer to be thin, energetic, and healthy . . . not just thin.

I've been ovo-lacto vegetarian for almost 47 years, but the reasons have nothing to do with bodyweight or health. Vegetarianism is a complete tangent to those goals, in any direct sense.

Calories.