It’s a crucial component of overall health but  contrary to popular belief, is not very effective for weight-fat loss. Calorie trackers tend to over-estimate calorie burn and you can’t rely on this metric. Also, cardio can be exhausting and can increase appetite which defeats the purpose. It can also tire you out so that you move less the rest of the day which means less calories are burned after the cardio session. 

It’s complicated but the bottom line is not to rely on cardio for weights or fat loss because the effect is relatively small. Strength training and eating in a calorie deficit is the way to lose fat - with limited cardio sprinkled in.