If you’re actually trying to manage your weight, do not increase your physical activity. Reduce how much you eat.
Most sites say running burns around 60 Calories/km or 100 Calories/mile. The average person burns 2,000 Calories a day by existing. If you ran a 10k every day, then you’d be using 2,600 Calories a day.
The difference in effort between “existing” and “runs a 10k every day” is massive, but the difference in Calories burned is equivalent to a large fry from McDonalds. So would you rather run a 10k or just take the fries out of your order?