If you're not getting on with it, you could try something else. I've lost weight before, using an approach I didn't enjoy with things like making myself vegetable soup for lunch every day and so on. It worked, but it felt hard to stick to.
I've since found that a high protein, lower carbohydrate diet combined with lifting weights works really well for me, and although it's hard work to do, I find it easier to stick to if that makes sense, and the kind of results I get are more in line with what I want.
There's no one "right" diet. Pretty much anything that sees you taking in less than you make use of will basically work, but what works for me (I'm male, tall, and inherently fairly big/strong) won't necessarily work for you.
Try different things. Give them a decent chance (say a solid month doing them exactly as you're "meant" to), and see how you feel about how it's working for you and how easily you're able to keep on plan.
Whatever works for you and you can do long term is always going to be more successful than a "better" diet that you get fed up with.