Calorie deficit & exercise calories earnt

Your deficit is already built in to your calorie goal. If you exercise, those additional calories are extra calories for you to eat. Not eating them increases your deficit. Say your daily deficit is 500 calories (1lb a week loss). If you burn 300 calories with exercise and don’t eat them, you make your deficit larger (500 + 300 = 800) for that day. However, calories burned through exercise are only an estimate (often overstated) so many people on here eat a portion back (50% or so). Only you can tell how many you need to eat back. Eat some or all back, and see how it affects your progress. Reassess in a month (losing more = eat more of them, losing less = eat less of them). Good luck!