You’re thinking is flawed but it’s not your fault. You’ve been lied to your entire life about how fat works.
When we stop fueling our bodies with carbs we force it use fat as fuel. In the beginning that’s the fat on our plate. After we’ve become fat adapted, which can take months, we are burning our body fat as well as the fat we consume. In order to produce the amount of energy our bodies require for life, a person would have to eat a lot more fat than just 100g per day, or whatever your macro level is. If you consume fewer fat grams, it doesn’t drive your body to use your stored fat more efficiently or more quickly, it may instead lower your basal metabolic rate, causing your weight loss to stall.
I think you should do some more research about fat burning, fat loss and keto.
I recommend listening to the Obesity Code podcast and the 2 keto Dudes.
For everyone I encounter who is keto and questioning or stalled, I recommend examining their fat intake. What are you consuming as your fat? Are you certain you are getting enough and are the sources appropriate?
Keep calm and keto on