I think there are two ways to do SW.
The one where you try and cheat it, and consume Muller lights, those noodle things, quark, sweetener, couscous pancakes and so on. People creating a jam donut out of a roll, quark, sweetener then baking it, or eating things they don't even like just because it's low syn.
Or the other way which is lots of fresh vegetables, salad, fruit, eggs, measured cereals etc, lots of cooking from scratch.
The first way is unsustainable and will never work long term. The second is what most people should eat anyway.
But then, unless you have a medical reason, I think low carb and keto and all of those are a load of nonsense.
I don't follow SW but stripped back, the basic principles are fairly sound. It's the way people interpretate it is when it becomes a problem.
Another vote to check out Slimming Hurled. Some of it is hilarious 