The best diet is the one you’re going to actually follow and stick to.
Diets that have names are universally trash. No exceptions. None. No, not even that one that your cousin’s wife’s sister used. They. Are. Trash.
If someone is selling you weight loss then assume they’re a charlatan. Here’s everything you need to know about losing weight, free of charge: eat less, move more. Done. There is not one single goddamn diet out there that is not based on the core of physics, i.e. the First Law of Thermodynamics. Nothing—nothing—overcomes that. It is 100% CICO, calories in, calories out. Now we can debate the merits of which types of calorie restriction are better or worse for you. But if the goal is to lose weight then you have to eat less than you burn every day. That’s it. It needn’t be any more complicated.
If right now you’re eating 3,000 calories of kind of bad food then you could lose weight by only eating 2,200 calories of the exact same food. Again, is this healthy? Probably not. McDonald’s isn’t good for you. But can you drop 40lbs by only eating McDonald’s? Of fucking course. (Don’t actually do this)
The point is that you do not need to design some esoteric diet plan that incorporates the phases of the moon and accounts for Mercury rising. Figure out how much you’re eating now, figure out your TDEE, and then eat 500 calories under that. Do it for a month. You’ll be hungry a lot. It sucks. You’ll get used to it. You’ll also be able to remind yourself that no, you’re not actually going to die because you’re a little hungry.
After the first month you adjust your new TDEE and drop calories further. This is when you can start incorporating some cardio. Exercise is a terrible way to lose weight. The people who start a diet and training concurrently usually fail. Exercise makes you even more hungry at a time that you’re already overwhelmed by it. It’s the fastest way to getting fatter. Get the diet down first, then add exercise. Order of operations is key here.
After a few months you’ll be feeling a lot better and everything will get easier as time goes on. Eventually you’ll want to add weight training. Adding muscle makes it easier to stay leaner and that’ll be something you’ll want. But it’s all predicated on you taking the first step and following the plan. Do it right and you’ll get where you want to be.