Breh, it's easier than it sounds. If you wanna make changes to your body composition, this is what it's about. No gimmicks, no bullshyt. Just count the calories and you'll be in business.
Here's an easy formula if you're trying to gain or lose weight. One pound of bodyfat = 3555/3500 calories.
Take whatever you way and multiply by 10-12, stick with 10 so it's easy. Say you're 200 pounds. 200 x 10 = 2000.
If you weigh 200 pounds, then 2000 is your rule of thumb when counting cals. If you weight 190 pounds, 1900 is your rule of thumb JUST to stay at 1900. Now back to the 200 pound example. If you eat less than 2000 cals, you're gonna lose weight over time because you're accumulating of deficit of calories, however, you're not gonna build much muscle in a caloric deficit unless you've never really worked out before, then you'll make some noobie gains.
Here's my suggestion if you're overweight. Count your calories, do some cardio with some weight training mixed in. When you cut down to an optimum weight, start working your way back up and eat in a caloric surplus. You'll build muscle that way.
But it depends what you want. If you wanna lose mass, eat less than your bodyweight in cals and do cardio. If you wanna add mass, eat in a surplus, challenge yourself with the weight, and make sure you get enough rest and recovery.
Cardio is only going to burn a couple hundred cals, depending on how vigorous your workout is, so the biggest catalyst as far as losing weight goes is ultimately your diet.
It's doable breh, it's all about how much you wanna make your goal happen.
I was 195 last year around this time, cut down to 148 using this formula, then i bulked back up to 205, and now I'm cutting again starting in June at around 205. As of today, I'm around 184-186. It's gonna take time and effort breh, but trust me, it's attainable if you put in the work.