Some of my favorite low carb, low/no sugar companies are:
Lettuce wrapped burgers and tacos or make them into a salad
Eggs and bacon or sausage (no toast)
Meat and cheese rollups
Steamed vegetables with salt and pepper and/or add cheese (carrots and potatoes are high in carbs as well as beans/legumes except for green beans).
Any type of meat that isn’t breaded (chicken, fish, pork, red meat)
Hope this helps a little
Lots of fat. Seriously. Eggs, cheese, butter, avocados, nuts/seeds, 80% lean ground beef. Fat kicks your satiety into high gear and makes you not hungry at all, forget about carbs. Carbs make you crave more carbs via insulin spikes/crashes.
Carb withdrawal made me homicidal the first two weeks. SUPER cranky, headaches, etc. And that was just a significant reduction in carbs, not full keto.
There are good replacements (now) for stuff that we normally eat that is carb based.
Zucchini noodles, spaghetti squash, shirataki noodles, cloud bread, cauliflower mashed potatoes, cauliflower rice, all sorts of things.
Once you get beyond the initial cravings, make sure you are getting enough fat in your diet. It keeps you satiated longer and won’t trip up your inulin response.
Also, are you getting enough water? it can make a huge difference.