I am a big advocate of Atkins. It always worked for me, IF I did it like he said to do in his book New Diet Revolution. This was before all the so-called "keto" snacks, bars, tortillas, and breads, crept onto supermarket shelves and only cause me to stall.
This year I took the Induction phase to the extreme and did zero carb/carnivore. I've had fantastic results and I am 48.