The whole keto lifestyle/diet is rife with misinformation, but I like to summarize it as good keto and bad keto.
Good keto, your diet is pretty well filled with high quality meat (grass fed beef, pasture raised pork, eggs, poultry, lamb etc) and loaded with lots of leafy green veggies, low carb veggies, and supplemented with butters (grass fed preferably), olive oil, avocado oil etc. Meals are large salads and lots of vegetables (but keeping carbs low - you actually have to watch your carb count with some veggies) and fatty meats etc. Lots of little add-ons here and there that add to things. You are trying to get maximum nutrition as a goal with everything you eat.
"Bad" keto, what some call dirty keto, is the "lazy", and sometimes cheaper way to do it as well. Go to McDonalds and order a double cheeseburger and don't eat the bun. Too much bacon and processed meats, "poor" quality fats....basically very low carb, but also tends to be too short in healthy fats, nutrients etc. Quick/easy. Might have a salad, but using store-bought salad dressing that is low carb, but also unhealthy fats (canola oil etc)
You can lose weight on both, but I think it is pretty obvious which one is better and healthier.