OK, so good, a clear starting point.

First, adding muscle is a fantastic way to go. Muscle burns energy and new muscle is not insulin resistant, so it lowers your overall insulin resistance. This is key to liberating fat and burning it for energy.

The other big key is diet. Your current diet is overwhelming your body's ability to burn without storing as fat. This means you are gaining body fat and this will get worse over time. Gaining muscle can help a fair bit but your existing muscle tissue along with other things like fat cells and other organs are all at the point of damage from high sugar levels in your diet. The fact that you can make yourself go to the gym is great, it means you have caught this before it has gotten too bad.

So to make progress on your diet you probably need to do a couple of things. First is check for other symptoms like swelling around the jawline, fat build up over the spine between your shoulders, rash and skin discolouration, pale gums and lips, and any sort of weakness in nails and hair. These are all potential indicators of an acute deficiency and may need medical support. That said, all of these are generally helped by dietary work, so if nothing massive is presenting like a goiter or anaemic gums you should probably just move forward with diet and reevaluate later.

So what to eat. The biggest problem seems to be sugar, followed by the sugar/fat/salt hyper palatable mix, then hyper processed, and lastly problematic plants. If you eat meat, which I would strongly recommend, then paring everything down to very simple meals is the best option. A kilogram of meat per day is a reasonable base for basically everyone. If you start there and can make it a week without anything else you will have a good starting point for completing an exclusion diet. If you can't jump directly to that then dropping out the worst items is a good step.

Dropping the worst means getting rid of the most packaged and insane foods, like cakes that last 6 months on the shelf or items with ingredients lists longer than The Art of War. If you keep eating sugars but they are in simple forms, for example honey or while fruit, you will avoid most of the worst stuff. It would also be good to learn more about cooking meat properly, so learn how to fry steak, cook chicken wings, and maybe roast a leg of pork. Learn to make basic stuff that tastes good and you will find reducing other crap easier.

Ultimately trying to hit numbers of grams of fat, protein, and carbs is a losing game. You don't know all the internal systems you have and how they allocate energy, but you do have a handy system they operate with, hunger. We should fix your hunger to make it work properly and that is what the above is for. You have simple foods, your body learns what they provide, your hunger becomes more accurate for what you need.

Once your hunger works properly you will do something like work out and you will feel more hungry in the day or two following it. Then chasing numbers won't be needed at all and you can relax.