Losing weight doesn't have to increase muscle, you might be trying to just actually lose weight. Also, the actual difference unless you replace an enormous amount of your mass with muscle (which unless you're doing an incredible amount of lifting you won't be doing), ends up being in the region of 1-200 calories per day, which is the difference between having a chocolate bar with your tea in the morning.
> But the last mile is really hard to get to without exercises
The last mile is the same as the previous mile. The difference is that many people realise that losing weight isn't the entire story, and the last mile is no longer about losing weight it's about gaining muscle, and _that_ requires exercise.
As I said, exercise is incredibly important, you'll look better you'll feel better, you'll sleep better, but you won't lose weight unless you're running 10k every day _and_ not eating any more to compensate for it.