I have lost weight on keto....but I've put some back..
the last year I've eaten low carb and my most recent A1C dropped to just 6 from 6.4 ( it had been over 9)..so something is working even though I cheat a bit....
with me, I need to crunch and I need to chew....so I do need my lettuce and other raw veggies no matter what.
That was a big reason we favored salads. It takes 20-30 minutes to eat a dinner salad. Very satisfying. You feel like you've eaten a big meal and had a good "grazing."