Help with calories, macros and mumbo jumbo

Hi guys. So basically I'm trying to lose weight and for the past 3 weeks i have been going gym 3 days a week (my longest run!) and I thought now was the time to start incorporating a meal plan.
So here are my stats: age-22 height-5'11 weight-255lbs goal-180.
Obviously I've done some research and i found out my maintenance is ~2900cal (don't know if this is right?) and to lose 1lbs a week i should have a deficit of 500 sooo ~2400?? But do i also need to factor in the calories I'm burning at the gym??? Let's just say my daily caloric intake is 2400 how should i break down my macros for efficient weight loss? Is 35% proteins, 35% carbs and 30% fats a good ratio?
I believe the first step to fitness is to educate yourself! Thx for any helpful replies.

So I'm assuming when you calculated your maintenance you used an exercise multiplier of some form (where you put in how much you work out a week) because otherwise 2900 seems exceptionally high for your size. In that case, no, you do not adjust your calories for your gym work, they're already included in your calculations. As helpful as online calculators are, the best way is really to use them as an approximate and then just monitor your weight, if you stall for a few weeks then you can knock 200 off and judge from there, and so forth.

As for macros, it's best not to look at them in terms of % but in terms of necessary grams. You need about 60-80g of fat a day for optimum health, and 0.8g per pound of lean body mass (probably around 150-160) of protein, so around 120g of protein a day. Get those two in, then fill the rest with carbs that whilst good for energy aren't necessary like the other two are.

So if i followed ur advice of 80g of fat and 120g of protein and following that 1g of fat=9cal , 1g of protein=4cal and 1g of carbs=4cal then wouldn't that mean i'd have to eat 300g of carbs?? Isn't that kinda excessive??

Eh wouldn't really call it excessive. Those are just minimum requirements either way, you can eat more fat than that and you can eat more protein than that, but the point is that as long as you hit those macros it doesn't really matter what the rest of your calories consist of.

Download myfitnesspal on your phone and enter all your weight/height info and goals on there. It automatically calculates your calorie limit per day. Also download Google Fit or Samsung Health and connect it to the app and let it track your daily steps. It's kind of hard to add strength training into the app so I wouldn't bother with that. Just add in details for any cardio you do. Steps will be tracked automatically when you connect Google Fit or Samsung Health, and the app allocates you more calories that day the more walking you do.
Macros don't really matter as much as calories unless you're trying to lose fat and gain muscle simultaneously, so I wouldn't focus too much on that. Just stay in a calorie deficit and you'll lose fat.

That 300g is like 50% of my daily calories, it might be okay for someone maintaining their weight but i think if u take it into my circumstance of trying to lose weight then i think maybe cutting it down to 250g??

I'd reduce the carbs a bit and have mainly protein and fat as these don't cause as much weight gain.

If you are going to add something make sure its accurate, carbs do not cause weight gain any more than protein or fat does, calories in vs out.

yes removing carbs all together on a keto diet can speed up weight loss but confusing the body and removing a huge list of delicious and healthy foods for the rest of op's life is pretty pointless when just using a normal diet works just as well and is easy to maintain for longer.

Nobody said lifelong, this would be short term to get the weight to a good point then it can be maintained by whatever means suitable.
Calories in is important but the nutrients consumed play a big part in how energy is used and how much can be stored. Protein is a good source of amino acids and iron in certain meats, which means having more of it than carbs ensures fewer calories but still high nutrition.