moderate intensity or high intensity for weight loss

Doesn't really matter what sort of exercise you do, it's not really going to affect your weight loss. All you need is a deficit.

You're not going to lose every week, unfortunately weight loss isn't linear. Some weeks you'll lose, some you'll stay the same, some you'll gain. Also, if you're only weighing once a week, you may have lost during the week then just had a fluctuation the one day you weighed.

Moderate cardio at the same intensity (for women) is bad. Steady-state activities like this devastate the female metabolism. This happens with men, too, but in different ways.The best thing to do is High Intensity Intervals. At a moderate pace you will not loose fat. If anything just stay soft.
The science:
Studies—both clinical and observational—make a compelling case that too much cardio can impair the production of the thyroid hormone T3, its effectiveness and metabolism[1-11], particularly when accompanied by caloric restriction, an all too common practice. This is why many first or second-time figure and bikini competitors explode in weight when they return to their normal diets, and it’s why the Jessicas of the world can run for hours every week with negative results.
T3 is the body’s preeminent regulator of metabolism, by the way it throttles the efficiency of cells[12-19]. It also acts in various ways to increase heat production[20-21]. As I pointed out in previous articles, this is one reason why using static equations to perform calories-in, calories-out weight loss calculations doesn’t work.
When T3 levels are normal, the body burns enough energy to stay warm, and muscles function at moderate efficiency. When there’s too much thyroid hormone (hyperthyroidism), the body goes into a state where weight gain is almost impossible. Too little T3 (hypothyroidism), and the body accumulates body fat with ease, almost regardless of physical activity level. Women inadvertently put themselves into a hypothyroid condition when they perform so much steady-state cardio.
In the quest to lose body fat, T3 levels can offer both success and miserable failure because of the way it influences other fat-regulating hormones[22-31]. Women additionally get all the other negative effects of this, which I’ll cover below. Don’t be surprised here. This is a simple, sensible adaptation of a body that’s equipped to bear the full brunt of reproduction.
http://athlete.io/5343/why-women-should-not-run/

For weight loss eat at a reasonable deficet...cardio just gives you more calories to eat.

You can't outrun poor eating....or surplus/maintenance eating

I did fix my diet by a long run , I don't eat fried foods , I eat brown carbs , salads , stopped eating processed sugary foods like cakes and chocolate bars . a typical meal for me is grilled protein with green sallad.

Could be my portions , or my eating hours . I don't know .

There's nothing wrong with fried foods, 'processed' foods etc. Meal timing doesn't matter either. But, portion sizes definitely do-weight loss is about a calorie deficit. Period. Doesn't matter what/when you're eating, as long as your staying within your allotted calorie amount. If you're not doing that, then you're not going to lose weight.

You can lose weight eating fast food and chocolate, just like you can gain weight eating chicken and salads-it all comes down to calories, calories, calories.

For weight loss eat at a reasonable deficet...cardio just gives you more calories to eat.

You can't outrun poor eating....or surplus/maintenance eating

I did fix my diet by a long run , I don't eat fried foods , I eat brown carbs , salads , stopped eating processed sugary foods like cakes and chocolate bars . a typical meal for me is grilled protein with green sallad.

Could be my portions , or my eating hours . I don't know .

Are you measuring and logging everything? If not, there is your problem

2 k is a fairly short run. How long is it taking you?
Go slower and further some days and faster other days. Vary your routine.

This will make absolutely no difference to weight loss. If don't know how many calories you are eating you are unlikely to be eating at a deficit do don't lose weight

Do you use a food scale for your food? Maybe you are eating more than you think?

Are you using MFP's NEAT method (in which you eat exercise cals back) or TDEE -20% (which includes exercise calories?)

Are you still losing inches?

ETA: If it is just this week then don't worry about it. Weight loss isn't linear. Give it another 4 weeks.

I haven't exercised in 2 weeks !! I ate below my calorie goal and I lost 1.5 and 2 pounds respectively ??
What was the question again ?